Question 1

A Wing-In-Ground (WIG) craft operating in displacement mode on the water shows which lights?

Accepted Answer

Power-driven vessel lights as prescribed by Rule 23. Rule 23(c): WIG craft show the flashing red light only when taking off, landing or in flight near the surface; on the water they show Rule 23(a) lights.

Question 2

A submarine on the surface at night shows which distinctive light?

Accepted Answer

An all-round flashing yellow light in addition to the normal power-driven vessel lights. Submarines on the surface display power-driven vessel lights plus an all-round FLASHING YELLOW light. This identifies them as a submarine and warns other vessels of their unusual manoeuvring characteristics and the danger of their presence. Submarines may also operate under escort or with naval vessels clearing the way. Mariners encountering a submarine should give a wide berth.

Question 3

A non-displacement hovercraft operating in the non-displacement mode shows:

Accepted Answer

Power-driven vessel lights together with an additional all-round flashing yellow light. Rule 23(b): a hovercraft operating in a non-displacement mode shall exhibit, in addition to the lights prescribed in paragraph (a) for power-driven vessels, an all-round flashing yellow light. This identifies the craft as a hovercraft, its manoeuvring characteristics and stopping distances are very different from a conventional vessel. In displacement mode, it shows standard power-driven vessel lights.

Lights, questions and explanations

A Wing-In-Ground (WIG) craft operating in displacement mode on the water shows which lights?

A submarine on the surface at night shows which distinctive light?

A non-displacement hovercraft operating in the non-displacement mode shows:

Practise this properly

Lights, questions and explanations

Questions

A Wing-In-Ground (WIG) craft operating in displacement mode on the water shows which lights?

A submarine on the surface at night shows which distinctive light?

A non-displacement hovercraft operating in the non-displacement mode shows:

Practise this properly