Question 1

What minimum visibility range is required for the masthead light of a power-driven vessel of 50m or more?

Accepted Answer

6 nautical miles. Rule 22, minimum visibility of lights: POWER-DRIVEN VESSELS 50m or more, masthead lights: 6nm; sidelights: 3nm; sternlight: 3nm; towing light: 3nm; all-round light: 3nm. Power-driven vessels 12-50m, masthead: 5nm; others 2nm. Under 12m, masthead/all-round: 2nm; sidelights: 1nm. Sternlight: 2nm. Anchored vessels: 2nm or 1nm (under 50m).

Question 2

A vessel of 40m is at anchor at night. What is the minimum required visibility range of her anchor light?

Accepted Answer

2 nautical miles. ANCHOR LIGHT VISIBILITY (Rule 22): for an anchored vessel less than 50m: all-round white anchor light, minimum 2nm. For 50m or more: fore anchor light minimum 3nm; aft anchor light minimum 2nm (if required). The 40m vessel is under 50m, her single anchor light must be visible at minimum 2nm. Under 7m: if exhibiting anchor light, minimum 1nm (if not in or near navigated waters, no light required per Rule 30(e)).

Question 3

Per Rule 22, the minimum range of visibility of the masthead light on a power-driven vessel of 50m or more in length is:

Accepted Answer

6 miles. Rule 22(a): vessels 50m+ masthead light = 6 miles, sidelights 3 miles, sternlight 3 miles, towing light 3 miles, all-round 3 miles.

Rule 22, questions and explanations

What minimum visibility range is required for the masthead light of a power-driven vessel of 50m or more?

A vessel of 40m is at anchor at night. What is the minimum required visibility range of her anchor light?

Per Rule 22, the minimum range of visibility of the masthead light on a power-driven vessel of 50m or more in length is:

Practise this properly

Rule 22, questions and explanations

Questions

What minimum visibility range is required for the masthead light of a power-driven vessel of 50m or more?

A vessel of 40m is at anchor at night. What is the minimum required visibility range of her anchor light?

Per Rule 22, the minimum range of visibility of the masthead light on a power-driven vessel of 50m or more in length is:

Practise this properly