Vessel Operation & Control Flashcards
7 cards from real Boating Certification Test practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Vessel Operation & Control flashcards as text
When operating in a narrow channel, where should you keep your vessel?
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.
What does a vessel's 'draft' refer to?
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.
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?
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.
What is the safest way to fuel a gasoline-powered boat?
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.
When docking in a current flowing parallel to the dock, which direction should you approach?
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.
What is the purpose of a vessel's trim tabs?
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.
When anchoring, what is the minimum scope (anchor line length to water depth) recommended in calm conditions?
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.