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Code of Practice
18 Navigational Equipment
18.1 Magnetic Compass
A vessel should be fitted with an efficient magnetic compass and valid deviation card (updated annually) complying with the following requirements as appropriate:-
.1 In a steel vessel, it should be possible to correct the compass for co-efficients B, C and D and heeling error;
.2 The magnetic compass or a repeater should be fitted with an electric light and so positioned as to be clearly readable by the helmsman at the main steering position;
.3 Means should be provided for taking bearings as nearly as practicable over an arc of the horizon of 360 degrees. (This requirement may be met by the fitting of a pelorus or, in a vessel other than a steel vessel, a hand bearing compass).
18.2 Other Equipment
A vessel which operates more than 20 miles from land (area category 0, 1 or 2) should be provided with:-
.1 a radio navigation aid appropriate for the area of operation;
.2 an echo sounder; and
.3 a distance measuring log; except that this need not be provided where the navigational aid in 18.2.1 provides the reliable distance measurements in the area of operation of the vessel.
