Question 1

Under the rules, a vessel with operational radar…

Accepted Answer

Must use it properly — long-range scanning and plotting or equivalent systematic observation — Assumptions on scanty radar information are specifically called out. Fitting radar brings the obligation to use it competently.

Question 2

Acting on radar alone in fog, the discouraged manoeuvre for a vessel forward of the beam is…

Accepted Answer

An alteration to PORT (other than for one being overtaken) — Two ships each turning helpfully can turn into each other; the rules bias fog manoeuvres away from port turns for contacts ahead.

Question 3

In restricted visibility, the stand-on/give-way system…

Accepted Answer

Does not apply — every vessel keeps clear of every other at a safe speed — Nobody stands on in fog. Hear a signal forward of the beam or detect a close-quarters situation: speed off to steerage, manoeuvre early — and avoid turning to port for a vessel forward of the beam.

Radar and the rules

This lesson is part of a paid course