Boat Handling Flashcards
6 cards from real SVOP practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 Boat Handling flashcards as text
When manoeuvring a small vessel in reverse, which side does a single right-hand propeller typically cause the stern to walk toward?
Answer: Port (left)
A right-hand (clockwise) propeller in reverse causes the stern to walk to port due to propeller torque and the paddle-wheel effect acting on the lower blade, which has greater bite.
What is the safest approach angle when coming alongside a dock in calm conditions?
Answer: 30 degrees, reducing to near-parallel
A 30-degree approach lets you control speed and pivot the stern in at the last moment with a burst of reverse or a spring line. Steeper angles risk a broadside collision; too shallow reduces control.
When must an operator use a kill switch (engine cut-off) lanyard?
Answer: Whenever the operator is the only person aboard or when required by the vessel's design
Transport Canada requires operators to use a kill switch lanyard whenever it is provided and when they could be thrown from the helm, preventing a runaway vessel after a fall overboard.
What effect does shallow water have on a vessel's handling?
Answer: Squat increases, stern sinks, steering becomes sluggish
In shallow water, flow is restricted under the hull, causing the bow to rise slightly and the stern to squat. Steering response deteriorates and the vessel may be drawn toward the bank (bank effect).
What is the purpose of a spring line when berthing?
Answer: To prevent the vessel from moving forward or backward along the dock
A spring line runs at an angle forward or aft along the dock and prevents the vessel from surging ahead or dropping astern while alongside, complementing breast lines that hold it laterally.
What is 'leeway' in vessel operation?
Answer: The sideways drift of a vessel caused by wind or current acting on the hull
Leeway is the lateral displacement of a vessel from its intended track, caused by wind pressing on the topsides and current pushing the hull sideways. Operators must correct for it by adjusting course.