OBS Online Boating Navigation Rules & Regulations 2

Question 1

When two power-driven vessels are crossing so as to involve risk of collision, which vessel must give way?

Accepted Answer

The vessel on the port side of the other

Answer

The vessel that has the other on its starboard side is the give-way vessel and must yield.

Question 2

What does a vessel's all-round white light indicate?

Accepted Answer

It is visible from all directions and marks vessels under 39.4 feet when underway

Answer

An all-round white light is visible through 360 degrees and is used by small vessels as a combined masthead/stern light option.

Question 3

What is the minimum sound signal required for a vessel over 12 meters when operating 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.

Question 4

In the US Inland Rules, a flashing blue light is used exclusively by which type of vessel?

Accepted Answer

Law enforcement vessels

Answer

Under US Inland Rules, law enforcement vessels may display a flashing blue light when engaged in law enforcement activities.

Question 5

Which side of a channel should a recreational boater keep to when traveling upstream (returning from sea)?

Accepted Answer

The right side (starboard)

Answer

When traveling upstream or returning from sea, boaters should keep to the right (starboard) side of the channel.

(OBS) Online Boating Safety Certification Practice Test