DWO Navigation and Safety 2

Question 1

Under COLREGS Rule 16, what action must a give-way vessel take?

Accepted Answer

Take early and substantial action to keep well clear

Answer

Rule 16 requires the give-way vessel to take early and substantial action to keep well clear of the stand-on vessel.

Question 2

What is the maximum permitted cross-track error (XTE) when navigating a vessel in restricted waters under most company SMS policies?

Accepted Answer

0.1 nautical miles

Answer

Most SMS policies and port authority requirements limit XTE to 0.1 nautical miles in restricted or confined waters.

Question 3

A vessel is overtaking another in a narrow channel. Which COLREGS rule primarily governs this situation?

Accepted Answer

Rule 13

Answer

Rule 13 governs overtaking situations, requiring the overtaking vessel to keep out of the way of the vessel being overtaken.

Question 4

When using a parallel index technique, the navigator maintains a fixed distance between the vessel's track and a prominent radar target to:

Accepted Answer

Monitor that the vessel stays on track without altering the radar range

Answer

Parallel indexing keeps a fixed bearing line parallel to the intended track, providing continuous off-track deviation monitoring.

Question 5

According to US regulations, what minimum visibility requires a vessel of 100 meters or more to sound a prolonged blast not more than every 2 minutes?

Accepted Answer

In or near an area of restricted visibility

Answer

COLREGS Rule 35 requires a power-driven vessel making way in or near restricted visibility to sound one prolonged blast at intervals of not more than 2 minutes.

(DWO) Deck Watch Officer Practice Test

(DWO) Deck Watch Officer Practice Test

DWO Navigation and Safety 2