[MAT 21,150] Anchored ships and ships aground30 

30
(1) A ship at anchor must exhibit where it can best be seen—
  • (a)in the fore part, an all round white light or one black ball; and
  • (b)another all round white light at or near the stern at a lower level than the light in the fore part,

except a ship that is less than 50 metres in length which may exhibit an all round white light where it can best be seen.

(2) A ship of 100 metres or more in length must also use the available working or equivalent lights to illuminate its decks when at anchor, whilst any other ship at anchor may also do so.
(3) A ship of less than 7 metres in length at anchor, not in or near a narrow channel, fairway, anchorage or where other ships normally navigate, shall not be required to exhibit the shape prescribed for a ship at anchor.
(4) A ship aground must exhibit the white light or lights for a ship at anchor prescribed in subregulation (1), and where they can best be seen—
  • (a)2 all round red lights in a vertical line; and
  • (b)3 black balls in a vertical line.
(5) A ship of less than 12 metres in length, when aground, is not required to exhibit the lights or shapes prescribed in subregulation (4), for a ship aground.