Swiftwater Rescue Technician Certification Exam — Questions and Answers

Question 1: What is 'rope entrapment' in swiftwater rescue?

A rope becoming tangled in the throw bag during deployment
A rope snagging on an underwater obstacle before reaching the victim
A rope looping around a victim's limb or body part and pinning them underwater under current force (Correct answer)
A rope becoming knotted at the anchor point

Correct answer: A rope looping around a victim's limb or body part and pinning them underwater under current force

Rope entrapment occurs when current forces drive a rope loop against a victim's body or limb against a fixed object, creating a potentially fatal pin.

Question 2: A swiftwater rescue technician working in water above 50°F but below 60°F for extended periods should consider:

A 3mm full wetsuit
A dry suit with light undergarments (Correct answer)
A shorty wetsuit only
No thermal protection if air temperature is warm

Correct answer: A dry suit with light undergarments

Water between 50–60°F can cause significant heat loss over time; a dry suit with light undergarments provides appropriate protection for prolonged operations.

Question 3: What does the GO/NO-GO decision protocol emphasize?

Whether the victim is conscious
Number of team members available
Speed of water current
Evaluating operational risk before action (Correct answer)

Correct answer: Evaluating operational risk before action

The GO/NO-GO decision is based on evaluating risk and prioritizing rescuer safety before engaging in a rescue.

Question 4: When documenting activities related to mechanical advantage & z-drag, which practice is considered essential for SRT certification holders?

Keeping documentation in personal notes that are not accessible to other team members
Maintaining comprehensive records that include procedures, observations, results, and any anomalies (Correct answer)
Completing documentation only when requested by auditors or supervisors
Recording only outcomes while omitting the methods and processes used

Correct answer: Maintaining comprehensive records that include procedures, observations, results, and any anomalies

Comprehensive documentation that includes procedures, observations, results, and any anomalies is essential in mechanical advantage & z-drag. This supports quality assurance, enables peer review, and satisfies regulatory and audit requirements.

Question 5: What does the term 'hydraulic gradient' refer to in river hydrology?

The difference in velocity between surface and bottom water
The ratio of sediment load to discharge
The temperature change in water as depth increases
The drop in elevation of the riverbed per unit of horizontal distance (Correct answer)

Correct answer: The drop in elevation of the riverbed per unit of horizontal distance

Hydraulic gradient (or river slope) is the vertical drop divided by horizontal distance, directly influencing current velocity — steeper gradients produce faster water.

Question 6: Which factor most commonly causes rescuer fatalities in swiftwater operations, according to incident review data?

Equipment failure
Poor victim cooperation
Failure to wear or improperly fitted personal protective equipment (Correct answer)
Insufficient training in rope systems

Correct answer: Failure to wear or improperly fitted personal protective equipment

Most swiftwater rescuer deaths involve absence or improper use of PFDs and other PPE, often driven by time pressure or overconfidence.

Question 7: In swiftwater trauma, 'mechanism of injury' information most importantly helps rescuers:

Decide whether to call for medical direction
Estimate how long the rescue will take
Determine the patient's insurance status
Anticipate hidden injuries not yet apparent on exam (Correct answer)

Correct answer: Anticipate hidden injuries not yet apparent on exam

MOI allows rescuers to predict injury patterns based on the forces involved, prompting thorough assessment even when obvious signs are absent.

Question 8: Which of the following is a characteristic of a rescue-grade pulley versus a general purpose pulley?

Rescue pulleys are sealed with no moving parts to prevent failure
Rescue pulleys use plastic sheaves for weight savings
Rescue pulleys have a swivel to prevent twisting under load
Rescue pulleys have a load rating certified to NFPA 1983 or equivalent standards (Correct answer)

Correct answer: Rescue pulleys have a load rating certified to NFPA 1983 or equivalent standards

Rescue-grade pulleys are tested and rated to NFPA 1983 Technical or General Use standards, ensuring they can safely handle life-safety loads.

Question 9: What is a tethered swimmer used for in rescue operations?

To assess river depth
To paddle the boat
To approach victims while connected to a rope system (Correct answer)
To signal from shore

Correct answer: To approach victims while connected to a rope system

A tethered swimmer is connected to a safety line and used to approach and assist victims in water when other methods fail.

Question 10: What is the 'Manning equation' used for in river hydrology?

Computing the Froude number to classify flow as sub- or supercritical
Determining the safe wading depth for a rescuer of a given weight
Estimating average stream velocity based on channel shape, slope, and roughness (Correct answer)
Calculating the tensile strength of ropes in current-assisted rescues

Correct answer: Estimating average stream velocity based on channel shape, slope, and roughness

Manning's equation relates channel geometry (hydraulic radius), slope (gradient), and roughness coefficient to estimate mean flow velocity — widely used in hydrology and flood prediction.

Question 11: What is the safest position for swimming in moving water?

Feet first on back (Correct answer)
Head down, feet behind
Face down freestyle
Vertical floating

Correct answer: Feet first on back

Defensive swimming position, with feet first and on the surface, allows rescuers to see hazards and steer clear of obstacles.

Question 12: What does a 'Z-drag' or 'Z-rig' haul system provide in a swiftwater rope rescue?

A releasable anchor for controlled lowering of a victim
A 3:1 mechanical advantage to haul a load with less force (Correct answer)
A 6:1 mechanical advantage using a piggyback pulley system
A self-tending belay that stops automatically if the haul team lets go

Correct answer: A 3:1 mechanical advantage to haul a load with less force

A Z-drag is a 3:1 mechanical advantage haul system that allows rescuers to move a heavy load or pinned boat with approximately one-third the force needed.

Question 13: When multiple swimmers are in the water simultaneously, the standard triage priority for boat-based rescue is:

Rescue the swimmer closest to the most immediate life-threatening hazard first (Correct answer)
Rescue the most visible swimmer first
Rescue the swimmer farthest downstream first
Rescue the smallest swimmer first to board them quickly

Correct answer: Rescue the swimmer closest to the most immediate life-threatening hazard first

Triage in swiftwater prioritizes victims closest to an immediate lethal hazard — strainer, hydraulic, or waterfall — regardless of other factors.

Question 14: What is the purpose of establishing a designated 'talk-around' channel during swiftwater rescue?

To keep civilians informed of rescue progress
To allow tactical on-scene communication without congesting the command channel (Correct answer)
To receive weather updates from dispatch
To communicate with the hospital during patient transport

Correct answer: To allow tactical on-scene communication without congesting the command channel

A talk-around or tactical channel keeps operational chatter separate from the command channel, reducing congestion.

Question 15: On the International Scale of River Difficulty, what factor distinguishes a Class V from a Class VI?

Class VI has a waterfall greater than 20 feet; Class V does not
Class V has reliable rescue options; Class VI has none at all
Class VI is considered unrunnable or so extreme that failure is likely fatal; Class V is runnable by experts with risk of serious injury (Correct answer)
Class VI contains more than five distinct hydraulic features per mile

Correct answer: Class VI is considered unrunnable or so extreme that failure is likely fatal; Class V is runnable by experts with risk of serious injury

Class VI represents the absolute limit of navigability — runs where failure carries a high probability of death — while Class V is runnable by expert paddlers accepting serious risk with skilled rescue support.

Question 16: Which statement best describes the difference between a simple and a compound mechanical advantage system?

Simple systems use pulleys; compound systems use only rope wraps
A simple system is a single arrangement of pulleys; a compound system uses one simple system to haul another (Correct answer)
Compound systems always provide less mechanical advantage than simple systems
Simple systems have all movable pulleys; compound systems have all fixed pulleys

Correct answer: A simple system is a single arrangement of pulleys; a compound system uses one simple system to haul another

A compound system multiplies mechanical advantage by using one simple haul system to drive another, yielding higher ratios.

Question 17: A swiftwater victim pinned against a strainer is extricated unconscious. During rapid trauma assessment, the team finds slow, irregular breathing and a bounding pulse. This combination most suggests:

Tension pneumothorax
Hypovolemic shock
Cushing's triad indicating rising intracranial pressure (Correct answer)
Hypothermia

Correct answer: Cushing's triad indicating rising intracranial pressure

Cushing's triad — hypertension with a bounding pulse, bradycardia, and irregular respirations — signals severely elevated intracranial pressure and impending brainstem herniation.

Question 18: What is the first step in the Incident Command System (ICS)?

Begin rescue operations
Call for media
Establish command (Correct answer)
Deploy the rescue swimmers

Correct answer: Establish command

Establishing command ensures that leadership is assigned and communication channels are organized from the start.

Question 19: After a capsize of an inflatable rescue boat, a crew member's first priority is:

Right the boat before anyone swims to shore
Account for all personnel and get everyone to safety (Correct answer)
Retrieve all loose gear floating in the river
Radio downstream teams with a situation report while staying with the boat

Correct answer: Account for all personnel and get everyone to safety

Personnel accountability and moving every person to safety is always the first priority after a capsize before any focus on equipment recovery.

Question 20: Which body area is most critical to insulate in cold-water swiftwater rescue to delay onset of hypothermia?

Head and neck
Feet and ankles
Hands and wrists
Core (torso and groin) (Correct answer)

Correct answer: Core (torso and groin)

The core contains vital organs; heat loss from the torso and groin drives core temperature drop and onset of incapacitating hypothermia fastest.

Question 21: When establishing a swiftwater rescue scene, what is the FIRST priority in the ICS size-up process?

Identifying entry and exit points
Life safety of rescuers and victims (Correct answer)
Requesting additional resources
Establishing a command post

Correct answer: Life safety of rescuers and victims

Life safety is always the first priority in any ICS size-up, including all swiftwater operations.

Question 22: What is 'crew resource management' (CRM) in the context of swiftwater rescue safety?

A post-incident debriefing methodology
Tracking physical equipment assigned to each crew
The logistics process for resupplying rescue teams
A communication framework that encourages all team members to voice safety concerns (Correct answer)

Correct answer: A communication framework that encourages all team members to voice safety concerns

CRM in rescue operations promotes a culture where any team member—regardless of rank—can raise a safety concern and expect it to be addressed.

Question 23: Which factor most directly causes an increase in a river's erosive power during flood conditions?

Increased sediment load only
Flattening of the river gradient
Decreased water temperature
Exponential increase in velocity and discharge (Correct answer)

Correct answer: Exponential increase in velocity and discharge

During floods, both velocity and discharge increase dramatically, and erosive power increases exponentially with velocity (proportional to velocity squared or greater).

Question 24: When throwing a rope bag from a moving rescue boat to a downstream swimmer, the thrower should:

Lead the swimmer by throwing well ahead of where they currently are (Correct answer)
Throw directly at the swimmer's current position
Throw upstream of the swimmer to account for drift
Aim for the swimmer's feet to avoid striking their head

Correct answer: Lead the swimmer by throwing well ahead of where they currently are

Because both the swimmer and rope are moving in current, throwing ahead of the swimmer's position ensures the rope reaches them as they drift into it.

Question 25: Seasonal ice formation on a river channel introduces which specific upstream/downstream hazard that is absent in warm-weather operations?

Frozen rivers are uniformly safe for rescue operations because current velocity is zero
Ice only affects hazards on the downstream end; upstream hazards remain unchanged
Ice reduces hydraulic intensity by dampening wave energy and smoothing surface turbulence
Ice shelves and anchor ice can form unexpected strainers and entrapment zones beneath the surface while concealing open water drops (Correct answer)

Correct answer: Ice shelves and anchor ice can form unexpected strainers and entrapment zones beneath the surface while concealing open water drops

Ice shelves may extend over moving water, concealing hydraulics below; anchor ice on the bottom creates entrapment zones; and ice shelves can collapse unexpectedly on rescuers.

Question 26: If a prussik used as a PCD fails to hold the haul line, which of the following is the MOST likely cause?

The prussik cord is too long
The prussik cord diameter is too large relative to the haul line
The prussik is tied with too many wraps
The prussik cord diameter is too small relative to the haul line (Correct answer)

Correct answer: The prussik cord diameter is too small relative to the haul line

A prussik cord that is too thin relative to the haul line will not generate enough friction to grip effectively under load.

Question 27: When conducting a victim search after a reported swiftwater submersion, searchers should initially focus on:

Downstream eddies, strainers, and hydraulics from the last-seen point (Correct answer)
The exact last-seen point and work upstream
Deep pools at least 500 meters downstream
The riverbank directly opposite the last-seen point

Correct answer: Downstream eddies, strainers, and hydraulics from the last-seen point

Submerged victims are carried downstream and become trapped in eddies, strainers, or hydraulics, making these features the highest-probability search locations.

Question 28: What is the term for water moving faster around a bend?

Counter flow
Centrifugal flow (Correct answer)
Backflow
Laminar flow

Correct answer: Centrifugal flow

Water on the outside of a bend moves faster due to centrifugal force, which increases erosion and hazard risk.

Question 29: During a swiftwater rescue, a rescuer's dry suit inflates noticeably at the legs while swimming. What is the likely cause?

Suit is overpressurized by the exhaust valve
The PFD is adding too much buoyancy
Air trapped from a partially opened exhaust valve or during a tumble (Correct answer)
Undergarment is too thick

Correct answer: Air trapped from a partially opened exhaust valve or during a tumble

Air can migrate to the legs during tumbling in current, causing dangerous inversion; rescuers must purge suit air before entering water.

Question 30: A rescuer's knife in swiftwater operations should be:

A multi-tool with blade, pliers, and scissors for versatility
A fixed-blade knife with a blunt tip, accessible with one hand on the body or PFD (Correct answer)
A serrated folding knife stored in the throw bag for emergencies
A folding lock-blade stored in a pocket for security

Correct answer: A fixed-blade knife with a blunt tip, accessible with one hand on the body or PFD

A fixed-blade knife with a blunt or rounded tip minimizes puncture risk and can be deployed one-handed, essential for cutting entangled rope quickly.

Question 31: Standing waves (haystacks) in a river are formed when:

A submerged rock deflects flow upward at a consistent angle
Two eddies collide at the center of the channel
Fast water enters a pool and decelerates, causing the water surface to oscillate (Correct answer)
Wind opposes the current direction

Correct answer: Fast water enters a pool and decelerates, causing the water surface to oscillate

Standing waves form at the transition zone where fast water decelerates into slower water, creating stationary wave peaks that oscillate in height.

Question 32: In a noisy gorge rescue where radio and hand signals both fail, what is the next communication option?

Abandon the rescue until conditions improve
Rely only on visual observation without signals
Use a megaphone or whistle code (Correct answer)
Swim to the victim without coordination

Correct answer: Use a megaphone or whistle code

Whistles and megaphones are tertiary communication tools when radio and hand signals cannot bridge the distance or noise.

Question 33: When is it appropriate to cut a throw rope during a rescue?

When a rescuer or victim is being pulled toward a hazard and cannot release the rope (Correct answer)
When the rope becomes tangled in tree branches
When the rope contacts the water and becomes slippery
When the victim's weight is too heavy to manage

Correct answer: When a rescuer or victim is being pulled toward a hazard and cannot release the rope

If a rescuer or victim is being pulled toward a fatal hazard such as a strainer or undercut and cannot release the rope, cutting it is the priority to prevent drowning.

Question 34: A rescuer is building a Z-drag and only has one pulley. Where should the single pulley be placed for maximum efficiency?

On the progress-capture device
At the anchor
On the load attachment
On the traveling (moving) block position (Correct answer)

Correct answer: On the traveling (moving) block position

Placing the pulley at the traveling (load-side) block reduces the most friction, since that sheave turns the most under a changing angle.

Question 35: Which of the following is a fundamental principle of rapid trauma assessment as it applies to Swiftwater Rescue Technician Certification?

Relying solely on personal experience without reference to guidelines
Avoiding documentation to streamline workflow efficiency
Prioritizing speed of completion over accuracy and compliance
Systematic evaluation and adherence to established industry standards (Correct answer)

Correct answer: Systematic evaluation and adherence to established industry standards

A fundamental principle of rapid trauma assessment in Swiftwater Rescue Technician Certification is the systematic evaluation and adherence to established industry standards, which ensures consistency, quality, and regulatory compliance across all professional activities.

Question 36: A river is described as 'pushy' versus 'technical' based on:

Whether it has Class IV or Class V rapids present
High volume/velocity with fewer obstacles versus lower volume with more complex obstacle navigation (Correct answer)
The presence of undercuts versus strainers as the primary hazard
Whether it is runnable by rafts or only by kayaks

Correct answer: High volume/velocity with fewer obstacles versus lower volume with more complex obstacle navigation

Pushy water has high volume and velocity that overwhelms obstacles and rescuers with brute force, while technical water requires precise maneuvering through complex features at lower volumes.

Question 37: Which ICS position is responsible for coordinating medical care for both victims and injured rescuers at a swiftwater incident?

Staging Area Manager
Operations Section Chief
Safety Officer
Medical Unit Leader (MEDL) (Correct answer)

Correct answer: Medical Unit Leader (MEDL)

The Medical Unit Leader manages on-scene medical resources and coordinates care for all casualties, including rescuer injuries.

Question 38: A rescue PFD 'quick-release' system must be tested before each deployment. What is the correct test procedure?

Simulate the release motion on land to confirm smooth operation and re-rig immediately (Correct answer)
Pull the release tab while standing in moving water
Submerge and release in still water only
Visually inspect only; never dry-test the release

Correct answer: Simulate the release motion on land to confirm smooth operation and re-rig immediately

A dry test on land confirms the mechanism releases smoothly; the rescuer must immediately re-rig after testing to ensure readiness.

Question 39: A rescuer notices a second hazard (strainer forming downstream) not identified in the initial briefing. What is the correct protocol?

Immediately notify the Safety Officer or IC and update the IAP (Correct answer)
Wait until the current operation concludes to report
Ask a team member to assess before reporting
Handle the hazard independently without disrupting command

Correct answer: Immediately notify the Safety Officer or IC and update the IAP

New hazards must be immediately communicated up the chain to the Safety Officer or IC so the Incident Action Plan can be updated.

Question 40: Which dry suit entry style is considered the easiest for self-donning during rapid deployment scenarios?

Side zipper entry
Front diagonal zipper (Correct answer)
Rear horizontal zipper
Front vertical zipper

Correct answer: Front diagonal zipper

Front diagonal zippers are easier to operate independently and are often preferred for solo donning in rapid-deployment settings.

Question 41: In swiftwater rescue, a Stokes basket or litter should be equipped with a 'bridle' to:

Serve as handholds for rescuers guiding the litter through current
Create a single lift or haul point that distributes load evenly across the basket (Correct answer)
Attach floatation devices to the sides of the litter
Attach a victim's safety harness to the basket frame

Correct answer: Create a single lift or haul point that distributes load evenly across the basket

A bridle connects to multiple structural points of the litter to create one balanced pick point, preventing the basket from tipping during hoisting or hauling.

Question 42: Which item is NOT typically included in a standard swiftwater rescue boat deployment kit?

Throw bag
Underwater welding equipment (Correct answer)
Spare shear pins for the outboard motor
Personal flotation devices for all crew

Correct answer: Underwater welding equipment

Throw bags, spare shear pins, and PFDs for all crew are essential rescue boat equipment, but underwater welding has no application in swiftwater field rescue.

Question 43: Which of the following is essential personal protective equipment for swiftwater rescuers?

Type V rescue PFD (Correct answer)
Life ring
Type II PFD
Inflatable vest

Correct answer: Type V rescue PFD

A properly fitted Type V personal flotation device (PFD) is critical for swiftwater rescue operations, offering buoyancy and mobility.

Question 44: How does the presence of a PFD affect defensive swimming technique?

PFD buoyancy eliminates the need for active floating effort, allowing the swimmer to focus entirely on steering
PFD buoyancy assists in maintaining the back-floating position but does not replace active body positioning (Correct answer)
PFDs reduce swimming efficiency so much that aggressive swimming is contraindicated when wearing one
The PFD raises the swimmer higher in the water, which increases the risk of rolling face-down in turbulence

Correct answer: PFD buoyancy assists in maintaining the back-floating position but does not replace active body positioning

A properly worn PFD aids buoyancy and helps maintain the defensive back-float, but active body positioning — feet downstream, toes up — remains necessary in moving water.

Question 45: What is the primary ethical obligation of a SRT professional when a conflict of interest arises during inflatable & rigid hull boats activities?

Proceed while favoring the outcome that benefits the professional personally
Resolve the conflict privately without informing stakeholders
Ignore the conflict if it does not directly affect the current task
Disclose the conflict to all relevant parties and recuse from the decision if necessary (Correct answer)

Correct answer: Disclose the conflict to all relevant parties and recuse from the decision if necessary

The primary ethical obligation when a conflict of interest arises in inflatable & rigid hull boats is to disclose it to all relevant parties and, if necessary, recuse from the decision. This maintains professional integrity and stakeholder trust.

Question 46: What is the primary reason that helical (spiral) currents form on the outside of river bends?

Wind acting on the water surface creates rotational momentum
Differential velocity between surface and deeper water combined with centrifugal force (Correct answer)
Temperature differences between surface and deep water cause convection
Sediment deposition on the inside bank pushes current outward in a spiral

Correct answer: Differential velocity between surface and deeper water combined with centrifugal force

Helical currents form because centrifugal force drives surface water outward while deeper, slower water moves inward, creating a corkscrew motion that contributes to bank erosion.

Question 47: For swiftwater rescue operations, the preferred paddle for an inflatable rescue boat should be:

A short, stiff paddle with a T-grip for positive control in turbulent water (Correct answer)
A heavy aluminum sweep oar for maximum leverage
A collapsible paddle for compact storage in the rescue bag
A long fiberglass kayak paddle without a T-grip

Correct answer: A short, stiff paddle with a T-grip for positive control in turbulent water

T-grip paddles lock the top hand in position, preventing the paddle from twisting in the grip during aggressive maneuvering in turbulent, aerated water.

Question 48: What feature is formed when fast-moving water drops over an obstruction and recirculates back upstream at the surface?

Hydraulic (hole) (Correct answer)
Eddy
Boil
Pillow water

Correct answer: Hydraulic (hole)

A hydraulic, or hole, forms when water drops over a ledge and the surface current recirculates back upstream, creating a potentially entrapping feature.

Question 49: The primary structural difference between a rigid inflatable boat (RIB) and a standard inflatable rescue boat (IRB) is:

RIBs are rated only for flatwater while IRBs are designed for rapids
RIBs are always motor-powered while IRBs are always paddle-powered
A RIB has a solid fiberglass or aluminum hull paired with inflatable sponson tubes, while an IRB has a flexible or inflatable floor (Correct answer)
RIBs have a single air chamber while IRBs have multiple independent chambers

Correct answer: A RIB has a solid fiberglass or aluminum hull paired with inflatable sponson tubes, while an IRB has a flexible or inflatable floor

The rigid hull of a RIB provides structural rigidity and tracking while the inflatable sponsons (tubes) provide buoyancy and impact absorption.

Question 50: During nighttime rescue boat operations on swiftwater, what hazard significantly elevates crew risk compared to daytime operations?

Inability to visually read water features, strainers, and hydraulics until the boat is dangerously close (Correct answer)
PFDs losing buoyancy in cold nighttime water temperatures
Increased water density causing the boat to ride lower
Motor exhaust fumes accumulating near the water surface at night

Correct answer: Inability to visually read water features, strainers, and hydraulics until the boat is dangerously close

Darkness eliminates the visual cues that allow crews to identify river hazards in advance, dramatically shortening reaction time to near zero.

Question 51: Which of the following is a fundamental principle of mechanical advantage & z-drag as it applies to Swiftwater Rescue Technician Certification?

Systematic evaluation and adherence to established industry standards (Correct answer)
Avoiding documentation to streamline workflow efficiency
Prioritizing speed of completion over accuracy and compliance
Relying solely on personal experience without reference to guidelines

Correct answer: Systematic evaluation and adherence to established industry standards

A fundamental principle of mechanical advantage & z-drag in Swiftwater Rescue Technician Certification is the systematic evaluation and adherence to established industry standards, which ensures consistency, quality, and regulatory compliance across all professional activities.

Question 52: A rescuer is positioned on shore and throws a bag to a swimmer. After the victim grabs the rope, the rescuer should:

Let the victim swing to shore in a pendulum arc (Correct answer)
Immediately wrap the rope around a tree to lock it
Drop the rope and wade in to assist
Pull the victim straight upstream against the current

Correct answer: Let the victim swing to shore in a pendulum arc

Allowing the current to swing the victim to shore in a pendulum arc uses the river's energy efficiently and reduces strain on both rescuer and victim.

Question 53: Which characteristic most distinguishes a 'keeper' hydraulic from a non-keeper hole?

A keeper recirculates objects back into the trough rather than flushing them downstream (Correct answer)
A keeper is always formed below vertical drops exceeding 6 feet
A keeper has steep side walls and no lateral escape route on either bank
A keeper has a longer wave train and higher aerated foam pile

Correct answer: A keeper recirculates objects back into the trough rather than flushing them downstream

A keeper hydraulic recirculates objects—including swimmers—back into the trough due to the geometry of the backwash, making escape extremely difficult.

Question 54: The grab line (perimeter line) on an inflatable rescue boat must be rigged so that:

A hand or foot can slide underneath it for self-rescue after capsize (Correct answer)
It is pulled taut and under tension to avoid snagging on obstacles
It is removed during active rescue operations to eliminate entanglement risk
It is made of wire rope or steel cable for maximum tensile strength

Correct answer: A hand or foot can slide underneath it for self-rescue after capsize

A slack perimeter line provides the critical handhold that rescuers and victims use after a capsize; a taut line cannot be gripped effectively from the water.

Question 55: When assessing a swiftwater victim's head during rapid trauma assessment, Battle's sign (bruising behind the ear) indicates:

Basilar skull fracture (Correct answer)
Temporal artery laceration
Cervical spine fracture
External ear trauma from paddle contact

Correct answer: Basilar skull fracture

Battle's sign is ecchymosis over the mastoid process caused by blood tracking from a basilar skull fracture — a delayed but definitive indicator of significant head trauma.

Question 56: What minimum buoyancy is required for a USCG-approved Type V rescue vest intended for swiftwater use?

33 lbs
15.5 lbs
22 lbs (Correct answer)
7.5 lbs

Correct answer: 22 lbs

USCG Type V rescue vests used in swiftwater must provide at least 22 lbs of buoyancy to be effective in aerated, turbulent water.

Question 57: Low-head dams are sometimes called 'drowning machines' because:

They produce a uniform recirculating hydraulic across the entire river width with few escape routes (Correct answer)
Their concrete faces cause severe trauma injuries upon impact
They generate unpredictable surge waves that catch boaters off guard
The water level drops suddenly, stranding swimmers on exposed concrete

Correct answer: They produce a uniform recirculating hydraulic across the entire river width with few escape routes

Low-head dams create a continuous, uniform hydraulic that spans the full river width, with powerful recirculation that prevents escape to either shore.

Question 58: When using a Prusik hitch as a progress capture device on a haul system, the Prusik cord diameter should be:

Significantly smaller than the main rope — typically 60-75% of the rope's diameter (Correct answer)
Any diameter, as the number of wraps determines grip, not diameter ratio
Larger than the main rope so it grips without damaging the sheath
Equal to the main haul rope diameter for maximum grip strength

Correct answer: Significantly smaller than the main rope — typically 60-75% of the rope's diameter

A Prusik cord should be 60-75% of the host rope diameter to allow the hitch to grip effectively under load and release when unloaded.

Question 59: Which footwear characteristic is MOST important for a swiftwater rescuer working in rocky river environments?

Waterproof membrane to keep feet dry during shore-based operations
Felt soles for maximum grip on algae-covered rocks
Lightweight open-toe sandal design for quick water drainage
Stiff sole for rock protection combined with drainage ports and secure ankle support (Correct answer)

Correct answer: Stiff sole for rock protection combined with drainage ports and secure ankle support

A stiff, protective sole prevents rock punctures, while drainage ports and secure ankle support reduce ankle injury risk during swift-water navigation.

Question 60: What is a key safety protocol before deploying rescue teams?

Waiting for backup
Gathering gear quietly
Conducting a safety briefing (Correct answer)
Sending a scout ahead

Correct answer: Conducting a safety briefing

Conducting a pre-rescue briefing ensures all team members are aware of objectives, hazards, and responsibilities.

Question 61: In the Incident Command System (ICS), who is responsible for ensuring rescuer safety throughout a swiftwater operation?

Logistics Section Chief
Operations Section Chief
Safety Officer (Correct answer)
Incident Commander

Correct answer: Safety Officer

The Safety Officer has authority to halt any operation deemed unsafe and reports directly to the Incident Commander.

Question 62: Hydrostatic pressure on a pinned boat increases primarily with:

The depth and volume of water pressing against the pinned surface area (Correct answer)
The speed of water flow over the boat's hull
The temperature differential between air and water
The angle of the boat relative to the current direction

Correct answer: The depth and volume of water pressing against the pinned surface area

Hydrostatic pressure is exerted by the weight and depth of water against the pinned boat's surface; greater depth and larger exposed area dramatically increase the total force holding the pin.

Question 63: When repairing a minor puncture in an inflatable rescue boat in the field, the correct method is:

Over-inflate the tube to maximum pressure to seal the hole by internal pressure
Use the manufacturer-provided patch kit with adhesive matched to the tube material (PVC or Hypalon) (Correct answer)
Replace the entire tube section at the earliest opportunity without patching
Apply duct tape over the puncture as an immediate permanent fix

Correct answer: Use the manufacturer-provided patch kit with adhesive matched to the tube material (PVC or Hypalon)

A proper field repair requires using patch material and adhesive specifically matched to the boat's tube composition — PVC and Hypalon require different adhesives.

Question 64: An undercut rock is particularly dangerous because:

It always produces a visible boil on the downstream surface identifying its location
Undercuts only affect paddlecraft and pose minimal risk to swimmers
Current flows beneath the rock, creating a void that can trap and pin a swimmer with no escape (Correct answer)
It creates a strong surface eddy that traps swimmers in a circular pattern

Correct answer: Current flows beneath the rock, creating a void that can trap and pin a swimmer with no escape

Undercut rocks have cavities beneath them where current flows—a trapped swimmer is pinned by hydraulic force with no upstream or downstream exit.

Question 65: When assessing a swiftwater victim's chest, paradoxical movement of a chest wall segment most likely indicates:

Simple rib contusion
Hemothorax
Flail chest (Correct answer)
Tension pneumothorax

Correct answer: Flail chest

Paradoxical movement — a segment moving inward during inhalation — is the hallmark sign of flail chest caused by multiple rib fractures in two or more places.

Question 66: During a contact rescue in swiftwater, a rescuer should approach a conscious victim from:

Directly alongside at the same speed
Perpendicular to the current to reduce collision force
Downstream, using an eddy to intercept the victim (Correct answer)
Upstream, swimming aggressively toward the victim

Correct answer: Downstream, using an eddy to intercept the victim

Approaching from a downstream eddy allows the rescuer to control position and intercept the victim without being pushed into them by the current.

Question 67: Which scenario best describes the hazard known as a 'keeper hydraulic'?

A hydraulic that only forms during peak flood discharge and dissipates at normal flows
A small, weak recirculation that poses minimal risk to a swimmer wearing a PFD
A hydraulic that is strong enough to hold a swimmer or boat indefinitely, preventing escape without outside assistance (Correct answer)
A hydraulic that accelerates a swimmer through the feature quickly and deposits them downstream

Correct answer: A hydraulic that is strong enough to hold a swimmer or boat indefinitely, preventing escape without outside assistance

A keeper hydraulic recirculates a victim continuously without releasing them downstream, making self-rescue essentially impossible and requiring external rescue intervention.

Question 68: Which of the following best describes the 'Go/No-Go' decision matrix used in swiftwater rescue?

A post-incident review of rescue decisions
A systematic evaluation of risk versus benefit before committing rescuers (Correct answer)
A federal checklist required before any water rescue
An equipment readiness checklist completed at the staging area

Correct answer: A systematic evaluation of risk versus benefit before committing rescuers

The Go/No-Go matrix requires rescuers and commanders to weigh hazard severity, resource capability, and victim survivability before committing to a rescue.

Question 69: When documenting activities related to radio & hand signal communication, which practice is considered essential for SRT certification holders?

Recording only outcomes while omitting the methods and processes used
Completing documentation only when requested by auditors or supervisors
Maintaining comprehensive records that include procedures, observations, results, and any anomalies (Correct answer)
Keeping documentation in personal notes that are not accessible to other team members

Correct answer: Maintaining comprehensive records that include procedures, observations, results, and any anomalies

Comprehensive documentation that includes procedures, observations, results, and any anomalies is essential in radio & hand signal communication. This supports quality assurance, enables peer review, and satisfies regulatory and audit requirements.

Question 70: A SRT professional encounters an unfamiliar situation while performing rapid trauma assessment duties. What is the most appropriate first action?

Skip the task entirely and move to the next assignment
Apply a solution from an unrelated field without verification
Proceed based on general assumptions to avoid delays
Consult relevant standards, guidelines, or a qualified supervisor before proceeding (Correct answer)

Correct answer: Consult relevant standards, guidelines, or a qualified supervisor before proceeding

When facing unfamiliar situations in rapid trauma assessment, the most appropriate action is to consult relevant standards, guidelines, or a qualified supervisor. This ensures safety, accuracy, and compliance while building professional knowledge.

Question 71: When a river's flow rate doubles (e.g., from 1,000 to 2,000 CFS), which statement best reflects the hydraulic impact?

The rescue difficulty remains the same as volume and hazard scale proportionally
Only gradient changes affect difficulty; volume increases are linear and manageable
The difficulty rating drops one class because higher volume smooths out obstacles
Features become more powerful and less predictable; Class ratings may increase significantly (Correct answer)

Correct answer: Features become more powerful and less predictable; Class ratings may increase significantly

Doubling flow doesn't simply double hazard — it can transform Class II features into Class IV by dramatically increasing force, creating new hydraulics, and reducing reaction time.

Question 72: A victim is pinned against a strainer in fast water. Rescuers are available but the Safety Officer deems the approach too hazardous. What is the correct course of action?

Proceed if two rescuers agree the risk is acceptable
Allow a volunteer with SRT experience to attempt entry
The IC must accept the Safety Officer's recommendation and seek alternative tactics (Correct answer)
Override the Safety Officer if the victim is conscious

Correct answer: The IC must accept the Safety Officer's recommendation and seek alternative tactics

The Safety Officer's authority to halt unsafe operations cannot be overridden by rescuer enthusiasm; the IC must explore lower-risk alternatives.

Question 73: What is the primary use of a throw bag in swiftwater rescue?

To throw a rope to a swimmer in distress (Correct answer)
Communication device
Floatation for gear
Anchor for rope systems

Correct answer: To throw a rope to a swimmer in distress

Throw bags are used to deliver a rope to a person in the water, providing a lifeline to pull them to safety.

Question 74: What is a 'strainer' in swiftwater rescue terminology?

A type of hydraulic found below dams
An obstruction that allows water through but traps solid objects (Correct answer)
A tool used to filter debris from a rope system
A low-head dam with grating on the downstream face

Correct answer: An obstruction that allows water through but traps solid objects

A strainer is any obstacle (such as a downed tree or debris pile) that allows water to pass through but traps swimmers, boats, or rescue personnel.

Question 75: What is the 'tongue' of a rapid?

The smooth V-shaped downstream-pointing current between obstacles (Correct answer)
A submerged rock shelf extending from the bank
A pillow of water on the upstream face of a rock
A lateral wave formed by converging currents

Correct answer: The smooth V-shaped downstream-pointing current between obstacles

The tongue is the smooth, V-shaped chute of fast water pointing downstream that indicates the deepest, least obstructed channel through a rapid.

Question 76: A carabiner rated for rescue use must have a minimum gate-closed, major-axis load rating of:

25 kN (Correct answer)
10 kN
15 kN
20 kN

Correct answer: 25 kN

Rescue-rated carabiners must withstand a minimum of 25 kN on the major axis with the gate closed to meet NFPA 1983 Technical Use standards.

Question 77: What is the function of a 'downstream safety position' in a swiftwater operation?

To communicate with helicopter support
To photograph the operation for documentation
To manage boat traffic on the river
To intercept and rescue any rescuer or victim who goes uncontrolled downstream (Correct answer)

Correct answer: To intercept and rescue any rescuer or victim who goes uncontrolled downstream

The downstream safety position acts as a last-chance catch point for rescuers or victims swept past the primary rescue location.

Question 78: When crossing an eddy line in a swiftwater rescue boat, the primary hazard to anticipate is:

Increased hull friction from turbulent water
Loss of motor power due to aeration
GPS signal interference from spray
An abrupt change in current direction causing the boat to spin or flip (Correct answer)

Correct answer: An abrupt change in current direction causing the boat to spin or flip

The sharp velocity differential across an eddy fence can quickly rotate or capsize a boat if it is not crossed at the proper angle and speed.

Question 79: What is the danger of a rescuer wrapping a throw rope around their hand or wrist during a rescue?

The rope can tighten and cause severe injury or pull the rescuer into the water (Correct answer)
It reduces throwing accuracy
It causes the rope to kink and lose strength
It prevents proper rope management

Correct answer: The rope can tighten and cause severe injury or pull the rescuer into the water

When a victim's weight loads the rope, a wrap around the hand or wrist can tighten instantly with extreme force, causing fractures, lacerations, or dragging the rescuer into the current.

Question 80: Water flowing at 10 feet per second exerts what approximate force per square foot on a pinned object?

100 pounds per square foot (Correct answer)
1,000 pounds per square foot
500 pounds per square foot
10 pounds per square foot

Correct answer: 100 pounds per square foot

Moving water at 10 fps exerts approximately 100 pounds of force per square foot of exposed surface area, making even moderate currents overwhelmingly powerful.

Question 81: How should neoprene gloves be selected for cold-water swiftwater rescue?

Gloves are not recommended as they impair the ability to grip ropes safely
Balance thermal protection with dexterity — 3mm gloves are a common compromise (Correct answer)
Thicker is always better — 7mm gloves provide the most protection
Select the thinnest glove possible to maximize dexterity for knot tying and equipment handling

Correct answer: Balance thermal protection with dexterity — 3mm gloves are a common compromise

3mm neoprene gloves balance thermal protection with the dexterity needed to tie knots, operate buckles, and handle equipment in cold conditions.

Question 82: What is the correct upstream ferry angle for an inflatable rescue boat to efficiently cross a swift current?

90 degrees perpendicular to the current
15 degrees nearly parallel to the current
30-45 degrees angled toward the upstream bank (Correct answer)
60-75 degrees angled toward the downstream bank

Correct answer: 30-45 degrees angled toward the upstream bank

A 30-45 degree upstream ferry angle allows the current to push the boat laterally while forward momentum is maintained with minimal effort against the flow.

Question 83: How does swimming angle affect a ferry in swiftwater?

The optimal ferry angle is always 30 degrees regardless of current speed
Steeper angles (closer to 45 degrees) increase downstream speed while reducing lateral gain (Correct answer)
Ferry angle has no practical effect — current speed is the only factor in lateral movement
A 90-degree angle to the current provides maximum lateral movement with minimum downstream travel

Correct answer: Steeper angles (closer to 45 degrees) increase downstream speed while reducing lateral gain

Steeper angles toward the current generate more downstream travel; shallower angles (closer to 30-45 degrees) maximize lateral gain but require more sustained swimming effort.

Question 84: What distinguishes a sieve from a strainer in swiftwater terminology?

Sieves flush swimmers through; strainers always trap them
A sieve is above water; a strainer is submerged
A sieve is in a rapid; a strainer is only found in flatwater
A sieve involves fixed rock gaps; a strainer typically involves debris like logs or branches (Correct answer)

Correct answer: A sieve involves fixed rock gaps; a strainer typically involves debris like logs or branches

Sieves are typically gaps in fixed rock formations, while strainers are debris (logs, branches, root balls) that allow water to pass but trap solid objects like swimmers.

Question 85: What is the theoretical mechanical advantage of a piggyback (3:1 added to a 3:1) compound system?

9:1 (Correct answer)
12:1
6:1
5:1

Correct answer: 9:1

A 3:1 pulling on another 3:1 multiplies the advantages: 3 × 3 = 9:1 theoretical mechanical advantage.

Question 86: When reading a river, what does an upstream-pointing V between rocks indicate?

A pillow of water indicating deep water ahead
The safest channel for navigation
A strong eddy current
A submerged rock or obstruction just below the surface (Correct answer)

Correct answer: A submerged rock or obstruction just below the surface

An upstream-pointing V (pointing toward you as you face downstream) indicates converging currents caused by a submerged rock or obstruction beneath the surface.

Question 87: What is the recommended air pressure range for most inflatable rescue boat tubes during active deployment?

2.5-3.5 PSI (firm with slight give) (Correct answer)
12-15 PSI (maximum rated pressure)
6-9 PSI (very hard to the touch)
0.5-1 PSI (very soft and flexible)

Correct answer: 2.5-3.5 PSI (firm with slight give)

Most IRBs operate optimally between 2.5-3.5 PSI, providing structural rigidity for handling while retaining some compliance to absorb rock impacts.

Question 88: A 'pourover' feature is hazardous primarily because:

The wave train below a pourover extends 50+ meters, exhausting swimmers
Water pours over a ledge and creates a recirculating hydraulic trough below (Correct answer)
Pourover rocks are always undercut, creating a pinning hazard for boats only
The smooth water on approach conceals depth, making foot placement uncertain

Correct answer: Water pours over a ledge and creates a recirculating hydraulic trough below

Water pouring over a ledge accelerates and plunges into a pool, creating a recirculating trough that can trap and recirculate swimmers.

Question 89: When assessing a low-head dam for a boat-based rescue, the key factor in determining go/no-go is:

Water temperature at the base of the structure
The width of the dam relative to the river channel
Whether the hydraulic is a 'keeper' (self-sustaining recirculation) or a flushing hydraulic (Correct answer)
The number of rescue boat crew members available

Correct answer: Whether the hydraulic is a 'keeper' (self-sustaining recirculation) or a flushing hydraulic

A keeper hydraulic recirculates indefinitely and will trap any rescue boat that enters it; only a flushing hydraulic has an exit route that allows victim and rescuer to clear.

Question 90: A swiftwater rescue PFD with an integrated harness differs from a basic Type V PFD in that it:

Has a reflective panel for nighttime operations built into the foam
Automatically inflates a secondary bladder when submerged past 1 meter
Includes structural webbing that can bear load, enabling the rescuer to be belayed or hoisted (Correct answer)
Provides additional buoyancy to support an unconscious victim

Correct answer: Includes structural webbing that can bear load, enabling the rescuer to be belayed or hoisted

An integrated harness PFD has load-bearing structural webbing that allows the rescuer to be connected to haul or belay systems, unlike a standard flotation vest.

Question 91: Why is post-incident debriefing important?

To evaluate and improve future response (Correct answer)
To delay paperwork
To report to the media
To discipline team members

Correct answer: To evaluate and improve future response

Debriefings allow teams to review actions, improve future performance, and address safety or communication gaps.

Question 92: In swiftwater ICS, what is the correct response when a rescuer self-identifies as unfit for continued duty due to cold water immersion?

Rest for 15 minutes and return to duty if feeling better
Report to Medical Unit, be evaluated, and do not return without medical clearance (Correct answer)
Continue operating until the operational period ends
Reassign them to a lower-risk position immediately

Correct answer: Report to Medical Unit, be evaluated, and do not return without medical clearance

Cold water immersion causes cumulative physiological effects; rescuers must be evaluated by medical personnel before returning to any operational role.

Question 93: During a boat-based 'live bait' rescue, the rescuer deployed into the water is:

Always deployed from the stern of the rescue boat
Tethered to the boat, which controls the pendulum swing toward the victim (Correct answer)
Only used when the boat cannot physically reach the victim's area
Fully independent with no connection to the boat

Correct answer: Tethered to the boat, which controls the pendulum swing toward the victim

In a boat-based live bait rescue, the tethered rescuer swings on the line while the boat manages the pendulum approach to reach the victim.

Question 94: A 'hydraulic classification' assessment for rescue planning should consider all of the following EXCEPT:

Whether the hydraulic is symmetrical or has diagonal flushing currents
The presence of escape routes at the lateral edges
The color of the foam pile indicating water chemistry (Correct answer)
The water temperature and time of year

Correct answer: The color of the foam pile indicating water chemistry

Foam pile color from water chemistry is irrelevant to hydraulic rescue assessment; rescuers focus on geometry, escape routes, edge characteristics, and current patterns.

Question 95: A 'Stokes basket' used in swiftwater rescue must be modified by:

Securing the patient face-down for airway protection
Adding flotation and drainage holes before use in water (Correct answer)
Replacing wire mesh with solid fiberglass panels
Removing the head restraint to prevent entrapment

Correct answer: Adding flotation and drainage holes before use in water

Standard Stokes baskets used in water rescues require flotation (foam inserts) and drainage holes so water can escape and the basket stays afloat with the patient.

Question 96: In the rapid trauma assessment, the 'P' in the DCAP-BTLS mnemonic stands for:

Punctures (Correct answer)
Pressure
Pulse
Perfusion

Correct answer: Punctures

In DCAP-BTLS, P stands for Punctures (or Penetrations), reminding rescuers to check for penetrating wounds that may not be immediately visible.

Question 97: A SRT professional encounters an unfamiliar situation while performing upstream & downstream hazard id duties. What is the most appropriate first action?

Skip the task entirely and move to the next assignment
Apply a solution from an unrelated field without verification
Consult relevant standards, guidelines, or a qualified supervisor before proceeding (Correct answer)
Proceed based on general assumptions to avoid delays

Correct answer: Consult relevant standards, guidelines, or a qualified supervisor before proceeding

When facing unfamiliar situations in upstream & downstream hazard id, the most appropriate action is to consult relevant standards, guidelines, or a qualified supervisor. This ensures safety, accuracy, and compliance while building professional knowledge.

Question 98: What is the effect of hyperventilation before a swiftwater swimming evolution?

Hyperventilation increases blood oxygen saturation, extending breath-hold capacity
Hyperventilation is a recommended warm-up technique taught in all SRT curricula
Hyperventilation lowers CO2 levels, which can delay the urge to breathe and increase blackout risk (Correct answer)
Hyperventilation tightens the chest muscles, reducing the effect of cold water shock

Correct answer: Hyperventilation lowers CO2 levels, which can delay the urge to breathe and increase blackout risk

Hyperventilation dangerously lowers CO2 (the primary trigger for the breathing reflex), which can cause loss of consciousness underwater before the swimmer feels the need to breathe.

Question 99: A rescue team is operating in a flood with rapidly changing water levels. Which safety protocol should be activated first?

Establish a flood trigger point and evacuation signal (Correct answer)
Increase the number of entry teams
Deploy additional boats immediately
Request helicopter support

Correct answer: Establish a flood trigger point and evacuation signal

A flood trigger point sets a measurable water-level threshold that automatically initiates evacuation of all personnel from the flood plain.

Question 100: What type of dry suit seal is most susceptible to tearing but provides the best watertight fit?

Velcro seals
Neoprene seals
Latex rubber seals (Correct answer)
Silicone seals

Correct answer: Latex rubber seals

Latex rubber seals provide an excellent watertight fit but are more fragile and prone to tearing than neoprene or silicone alternatives.

Swiftwater Rescue Technician Certification Exam

The Swiftwater Rescue Technician (SRT) Certification Exam assesses competency in river hydrology, hydraulics, rescue equipment, swiftwater rescue techniques, boat operations, and incident command for technical water rescue professionals.

100

Questions

120 min

Time Limit

70%

To Pass

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