USCG Navigation Rules and Regulations

Question 1

When two power-driven vessels are meeting head-on, both vessels are required to do what?

Accepted Answer

Alter course to starboard

Answer

Under COLREGS Rule 14, when two power-driven vessels meet head-on, each shall alter course to starboard so they pass port-to-port.

Question 2

What does a single prolonged blast of a vessel's whistle indicate in restricted visibility?

Accepted Answer

A vessel underway and making way

Answer

Under COLREGS Rule 35, a power-driven vessel underway and making way shall sound one prolonged blast at intervals of not more than 2 minutes.

Question 3

Under the Inland Rules, a white light visible all around the horizon is required for which vessel?

Accepted Answer

A vessel less than 7 meters at anchor

Answer

Under Inland Rule 30, a vessel less than 7 meters at anchor may show an all-round white light instead of anchor lights.

Question 4

What is the minimum sound signal equipment required for a vessel 12 to 20 meters in length?

Accepted Answer

A whistle and a bell

Answer

COLREGS Rule 33 requires vessels 12 meters or more in length to carry a whistle and a bell.

Question 5

Which light is required on the stern of a power-driven vessel underway?

Accepted Answer

A white sternlight

Answer

COLREGS Rule 23 requires a power-driven vessel underway to exhibit a white sternlight showing an arc of 135 degrees.

USCG - United States Coast Guard Practice Test