VTS Vessel Traffic Management & Navigation 2 — Questions and Answers
Question 1: A vessel reports its radar is inoperative while transiting a fog-bound VTS zone. What is the VTS operator's primary responsibility?
- Deny the vessel entry until radar is repaired
- Inform the vessel of known traffic and provide enhanced monitoring (Correct answer)
- Transfer the vessel to Coast Guard jurisdiction immediately
- Require the vessel to anchor until conditions improve
Correct answer: Inform the vessel of known traffic and provide enhanced monitoring
VTS operators provide enhanced traffic information and monitoring to assist vessels with degraded navigation equipment, but cannot deny entry or order anchoring unless directed by competent authority.
Question 2: Under 33 CFR Part 161, which vessels are required to participate in a VTS?
- All recreational vessels over 26 feet
- Power-driven vessels over 1,600 gross tons, vessels carrying hazardous cargo, and towing vessels over 8 meters (Correct answer)
- Only foreign-flagged vessels in U.S. waters
- All commercial vessels regardless of size
Correct answer: Power-driven vessels over 1,600 gross tons, vessels carrying hazardous cargo, and towing vessels over 8 meters
33 CFR 161.15 mandates participation by vessels over 1,600 GT, those carrying certain dangerous cargoes, and towing vessels over 8 meters on affected waters.
Question 3: What does the term 'precautionary area' mean in the context of vessel traffic management?
- An area where vessels must stop and await VTS clearance
- A routing measure where vessels must navigate with particular caution due to converging traffic lanes (Correct answer)
- A zone where anchoring is strictly prohibited
- An area designated for vessel inspection by port state control
Correct answer: A routing measure where vessels must navigate with particular caution due to converging traffic lanes
A precautionary area is a routing measure where vessels must proceed with particular caution, often at the junction of traffic separation schemes.
Question 4: A VTS operator detects two vessels on a collision course. The operator has issued traffic information but the vessels have not responded. What is the next appropriate action?
- Immediately broadcast a Securite message on Channel 16 to all vessels in the area (Correct answer)
- Contact the vessel owners to report the non-compliance
- Notify the Coast Guard Sector and continue monitoring
- Broadcast a Mayday on behalf of both vessels
Correct answer: Immediately broadcast a Securite message on Channel 16 to all vessels in the area
Broadcasting a Securite on Channel 16 alerts all vessels to the navigational hazard, fulfilling the VTS safety information role when direct contact fails.
Question 5: In vessel traffic management, what is the significance of a 'separation zone' within a traffic separation scheme (TSS)?
- It is a zone where vessels may anchor temporarily
- It separates opposing traffic streams and vessels must not navigate through it except in emergencies (Correct answer)
- It designates the area reserved for pilot boat operations
- It is a buffer zone where vessels may travel in either direction
Correct answer: It separates opposing traffic streams and vessels must not navigate through it except in emergencies
The separation zone is the core of a TSS design, creating a physical buffer between opposing traffic lanes that vessels must not enter except to cross or in emergencies.
Question 6: What information must a vessel provide in a mandatory position report to VTS upon entering a reporting zone?
- Vessel name, position, speed, course, destination, and any hazardous conditions (Correct answer)
- Only vessel name and MMSI number
- Cargo manifest and crew list
- Insurance certificate number and owner contact information
Correct answer: Vessel name, position, speed, course, destination, and any hazardous conditions
Standard VTS position reports per 33 CFR 161.21 require vessel name, call sign, position, speed, course, destination, and information about hazardous cargo or conditions.
Question 7: When a VTS area encompasses a bridge with a restricted vertical clearance, what tool does the VTS operator use to manage vessel transits?
- Bridge transit scheduling and air draft verification procedures (Correct answer)
- Real-time GPS tracking only
- Mandatory tugboat escort requirements for all vessels
- Blanket prohibition on all vessels exceeding 50 feet in height
Correct answer: Bridge transit scheduling and air draft verification procedures
VTS operators use scheduling systems and verify vessel air draft against available clearance, often coordinating with bridge operators, to safely manage transits.
VTS Vessel Traffic Management & Navigation 2
A vessel reports its radar is inoperative while transiting a fog-bound VTS zone.
What is the VTS operator's primary responsibility?