Ship Driver Rules of the Road (COLREGS) 2

Question 1

What does an all-round white light displayed by a vessel at anchor indicate?

Accepted Answer

The vessel is at anchor in its current position

Answer

A vessel at anchor must show an all-round white light visible from all directions per COLREGS Rule 30 to warn approaching vessels.

Question 2

What is the minimum sound signal required for a power-driven vessel in restricted visibility?

Accepted Answer

One prolonged blast every 2 minutes

Answer

A power-driven vessel making way in restricted visibility must sound one prolonged blast at intervals of not more than 2 minutes per COLREGS Rule 35.

Question 3

A sailing vessel underway at night must show:

Accepted Answer

Red and green sidelights and a white sternlight only

Answer

A sailing vessel underway shows only red and green sidelights and a white sternlight — no masthead light, which distinguishes it from a power vessel.

Question 4

In a narrow channel, a vessel wishing to overtake another must:

Accepted Answer

Request permission via two prolonged and one short blast (or two prolonged and two short blasts)

Answer

In narrow channels, the overtaking vessel signals its intent with two prolonged blasts + one short (to pass starboard) or two prolonged + two short (to pass port) per Rule 9.

Question 5

What does five or more short blasts on a whistle signify?

Accepted Answer

Danger — I am unsure of your intentions

Answer

Five or more short blasts is the danger signal under COLREGS Rule 34(d), indicating doubt about another vessel's actions or intention.

Ship Driver Practice Test

Ship Driver Practice Test

Ship Driver Rules of the Road (COLREGS) 2