Question 1

A sailing vessel underway under sail alone at night must display:

Accepted Answer

Sidelights and sternlight only. Rule 25(a): a sailing vessel underway shall exhibit sidelights and a sternlight. No masthead light is required, that is for power-driven vessels. Rule 25(c): she MAY additionally exhibit at the masthead two all-round lights, red over green. Rule 25(d): a sailing vessel under 7m should if practicable exhibit sidelights and sternlight, but if not, have a white light ready.

Question 2

A sailing vessel is motoring with sails up. What light or shape must she display by day?

Accepted Answer

A black cone, apex downwards, forward where best seen. Rule 25(e): a vessel proceeding under sail when also being propelled by machinery shall exhibit forward where it can best be seen a conical shape, apex downwards. At night she must display power-driven vessel lights (masthead light, sidelights, sternlight). She is treated as a power-driven vessel under the Rules when motoring.

Question 3

A sailing vessel under 7m at night, where it is not practicable to exhibit sidelights and a sternlight, shall:

Accepted Answer

Have ready at hand an electric torch or lighted lantern showing a white light, exhibited in sufficient time to prevent collision.. Rule 25(d)(i): a sailing vessel of less than 7m in length shall, if practicable, exhibit the lights prescribed in Rule 25(a) or (b), but if not practicable, shall have ready at hand an electric torch or lighted lantern showing a white light which shall be exhibited in sufficient time to prevent collision. The torch or lantern must be ready for use and shown early enough to prevent collision.

Rule 25, questions and explanations

A sailing vessel underway under sail alone at night must display:

A sailing vessel is motoring with sails up. What light or shape must she display by day?

A sailing vessel under 7m at night, where it is not practicable to exhibit sidelights and a sternlight, shall:

Practise this properly

Rule 25, questions and explanations

Questions

A sailing vessel underway under sail alone at night must display:

A sailing vessel is motoring with sails up. What light or shape must she display by day?

A sailing vessel under 7m at night, where it is not practicable to exhibit sidelights and a sternlight, shall:

Practise this properly