PCOC Weather and Environmental Factors 2

Question 1

A rapidly falling barometer over a short period typically indicates:

Accepted Answer

Severe weather approaching quickly

Answer

A rapid drop in barometric pressure signals that a storm or severe weather system is moving in quickly.

Question 2

When operating in fog, which sound signal should a power-driven vessel underway make at least every 2 minutes?

Accepted Answer

One prolonged blast

Answer

A power-driven vessel underway in restricted visibility must sound one prolonged blast at intervals of not more than 2 minutes.

Question 3

Which cloud type is most associated with thunderstorms and violent weather?

Accepted Answer

Cumulonimbus

Answer

Cumulonimbus clouds are towering storm clouds that produce thunderstorms, heavy rain, lightning, and strong winds.

Question 4

A wind shift from south to northwest in the Northern Hemisphere typically signals:

Accepted Answer

The passage of a cold front

Answer

A counterclockwise (backing) wind shift to the northwest commonly occurs after a cold front passes through.

Question 5

What is the primary danger of operating a vessel during an electrical storm?

Accepted Answer

Lightning strikes to the vessel or occupants

Answer

Lightning can strike a vessel directly and is a leading cause of serious injury and death to boaters during thunderstorms.

(PCOC) Pleasure Craft Operator Card Practice Test