Chapter:	369AJ	Title:	MERCHANT SHIPPING (SAFETY) (NAVIGATIONAL EQUIPMENT) REGULATIONS	Gazette Number:
Regulation:	32	Heading:	Interference with reception	Version Date:	30/06/1997

(1) Radio antennas installed in any ship required to be fitted with a direction-finder installation which rise above the base of, and are within 17 metres horizontal distance of, the loop antennas of the direction-finder installation shall be isolated whenever bearings are being obtained by the direction-finder installation:
Provided that such radio antennas which do not cause significant errors in the accuracy of the bearings obtained by the direction-finder installation need not be isolated.
(2) Any ship fitted on or after 25 May 1980 with a direction-finder installation shall be provided with a communal antenna system for all broadcast receivers in respect of which it is impracticable to erect efficient and properly installed antennas which-

(a) are outside a radius of 17 metres from the direction-finder antennas; or
(b) do not rise above the base of the direction-finder antennas; or
(c) can be lowered quickly and stowed easily when the direction-finder is in use.