PCOC Vehicle Systems and Operations 5

Question 1

What should you do before starting an inboard or stern-drive engine after fueling?

Accepted Answer

Run the bilge blower for at least four minutes to clear fuel vapors

Answer

Running the bilge blower for at least four minutes removes potentially explosive fuel vapors before ignition.

Question 2

What is the primary purpose of a marine gear shift (throttle/shift control)?

Accepted Answer

To shift the engine between forward, neutral, and reverse and control throttle speed

Answer

The throttle/shift control selects the direction of propeller rotation and controls engine speed simultaneously.

Question 3

Why is it important to check the engine oil level before each outing on a 4-stroke outboard?

Accepted Answer

Low oil causes increased friction and can seize the engine

Answer

4-stroke outboards use engine oil to lubricate internal components, and low oil can cause catastrophic engine failure.

Question 4

What does a boat's tachometer measure?

Accepted Answer

Engine speed in revolutions per minute (RPM)

Answer

The tachometer displays engine RPM, helping the operator avoid over-revving and select the proper power setting.

Question 5

What is the danger of overloading a small pleasure craft beyond its rated capacity?

Accepted Answer

The boat's freeboard decreases, increasing the risk of swamping and capsizing

Answer

Overloading reduces freeboard and stability, making it far easier for waves or passenger movement to swamp or capsize the vessel.

(PCOC) Pleasure Craft Operator Card Practice Test