Boating Certification Test Vessel Operation and Handling 3

Question 1

When fueling a powerboat, what should you do before starting the engine after fueling?

Accepted Answer

Run the blower for at least 4 minutes to clear fuel vapors

Answer

Gasoline vapors are heavier than air and can collect in the bilge; running the blower for at least 4 minutes before starting removes explosive fumes.

Question 2

What is cavitation in the context of a boat propeller?

Accepted Answer

The formation and collapse of vapor bubbles around the propeller blades

Answer

Cavitation occurs when low pressure on the propeller blade surface causes water to vaporize, forming bubbles that collapse and damage the propeller.

Question 3

When two power-driven vessels meet head-on, which action is required?

Accepted Answer

Both vessels alter course to starboard to pass port-to-port

Answer

In a head-on situation, both vessels must turn to starboard so they pass each other on their port (left) sides — a rule under COLREGS Rule 14.

Question 4

What does 'planing' mean when describing how a powerboat operates?

Accepted Answer

The hull rides on top of the water rather than pushing through it

Answer

A planing hull rises up and skims across the water surface at higher speeds, reducing drag significantly compared to displacement mode.

Question 5

Which of the following best describes 'dead reckoning' navigation?

Accepted Answer

Estimating current position using last known position, speed, and heading

Answer

Dead reckoning calculates your estimated position by starting from a known point, then applying speed, heading, and elapsed time to project forward.

Boating Certification Test Practice Test