OBS Traffic Laws & Regulations 3

Question 1

Which vessel has the right of way over all others under the Navigation Rules?

Accepted Answer

A vessel not under command

Answer

A vessel not under command (unable to maneuver) has the highest right-of-way priority because it cannot take action to avoid collision.

Question 2

What do five or more short blasts on a horn or whistle mean?

Accepted Answer

Danger or doubt about the other vessel's intentions

Answer

Five or more short blasts is the danger or doubt signal indicating the operator is uncertain of the other vessel's intentions.

Question 3

A motorboat is required to display which lights when operating between sunset and sunrise?

Accepted Answer

Red port light, green starboard light, and white stern light

Answer

Motorboats under 39.4 feet must display red (port), green (starboard), and white stern lights at night.

Question 4

When must a vessel give way to a vessel being overtaken?

Accepted Answer

Always — the vessel being overtaken is the stand-on vessel

Answer

The vessel being overtaken always has the right of way; the overtaking vessel must keep clear until completely past and clear.

Question 5

What is a 'no-wake zone' and what speed is typically required?

Accepted Answer

A zone where vessels must travel slowly enough to produce no wake, usually under 5 mph

Answer

No-wake zones require vessels to travel at the minimum speed needed to maintain steerage, typically under 5 mph, to prevent wake damage.

(OBS) Online Boating Safety Certification Practice Test