Boating Certification Test Vessel Operation & Control 2 — Questions and Answers
Question 1: When operating in a narrow channel, where should you keep your vessel?
- In the center of the channel
- As far to the starboard (right) side as is safe and practical (Correct answer)
- On the port (left) side of the channel
- Anywhere that avoids other traffic
Correct answer: As far to the starboard (right) side as is safe and practical
Rule 9 of the Navigation Rules requires vessels in narrow channels to stay as far to the starboard side as is safe and practical.
Question 2: What does a vessel's 'draft' refer to?
- The speed of the vessel through water
- The distance from the waterline to the bottom of the keel (Correct answer)
- The width of the vessel at its widest point
- The amount of fuel the vessel carries
Correct answer: The distance from the waterline to the bottom of the keel
Draft is the vertical distance between the waterline and the lowest point of the hull, which determines minimum water depth needed.
Question 3: You are approaching a bridge with a fixed vertical clearance of 20 feet. Your boat's mast is 18 feet tall. What should you do?
- Proceed at slow speed and your vessel will fit (Correct answer)
- Do not proceed — the clearance is insufficient
- Radio the bridge operator for permission to pass
- Lower your speed to reduce your height in the water
Correct answer: Proceed at slow speed and your vessel will fit
With a 20-foot clearance and an 18-foot mast, you have 2 feet of clearance, so you may proceed cautiously at slow speed.
Question 4: What is the safest way to fuel a gasoline-powered boat?
- Fuel at the dock with the engine running to save time
- Fuel with all hatches open and run blower for at least 4 minutes after fueling before starting (Correct answer)
- Fuel only while underway to prevent dock fires
- Fuel in enclosed spaces to protect from wind igniting vapors
Correct answer: Fuel with all hatches open and run blower for at least 4 minutes after fueling before starting
Gasoline vapors are heavier than air and collect in bilges; running the blower for at least 4 minutes purges fumes before starting the engine.
Question 5: When docking in a current flowing parallel to the dock, which direction should you approach?
- With the current, so it helps push you into the dock
- Against the current, so it slows you and gives steering control (Correct answer)
- At a 90-degree angle regardless of current
- Current direction does not affect docking approach
Correct answer: Against the current, so it slows you and gives steering control
Approaching into the current lets it act as a brake and allows you to maintain steerage at low speed for a controlled docking.
Question 6: What is the purpose of a vessel's trim tabs?
- To steer the vessel left or right
- To adjust the running attitude (bow up or bow down) for better performance (Correct answer)
- To signal other vessels of your intentions
- To reduce engine RPM at high speeds
Correct answer: To adjust the running attitude (bow up or bow down) for better performance
Trim tabs on the transom can be deflected downward to push the stern up and bow down, or raised to lift the bow, optimizing the vessel's running attitude.
Question 7: When anchoring, what is the minimum scope (anchor line length to water depth) recommended in calm conditions?
- 1:1
- 3:1
- 5:1 to 7:1 (Correct answer)
- 10:1
Correct answer: 5:1 to 7:1
A scope of 5:1 to 7:1 is generally recommended in calm conditions, meaning 5–7 feet of anchor rode for every 1 foot of water depth.
Boating Certification Test Vessel Operation & Control 2
When operating in a narrow channel, where should you keep your vessel?