A vessel not under command.

Power-driven vessel; 50 metres or more; ahead; or tug & tow; less than 50 metres; astern < 200 m in length; ahead.

Fishing vessel other than a trawler when there is outlying gear extending more than 150 metres horizontally from the vessel.

Two vessels: left - not under command; right - an air-cushion vessel; port side; shall keep out of the way.

A vessel restricted in her ability to manoeuvre.

Aground; indicate distress and need of assistance.

A vessel engaged in mine clearance; dangerous to aprouch within 1000 metres.

1) A vessel underway; astern; 2) a vessel at anchor; less than 50 metres; 3) a sailing vessel less than 7 metres or vessel under oars; 4) power-driven vessel; less than 7 metres, speed does not exceed 7 knots; 5) power-driven vessel; less than 50 meters in distance 2 – 5 miles.

A vessel under sail also being propeled by machinery.

Tug & tow; astern > 200 metres in length.

Two vessels: left - "I am altering my course to starboard"; right - power-driven vessel.

A vessel engaged in dredging or underwater operations; may pass on starboard side.

Power-driven vessel; less than 50 metres; starboard side.

Two vessels: left - "I am operating astern propulsion"; right - tug & tow; less than 50 metres; astern < 200 metres in length.