(b) should be aware that oil and gas production facilities and mobile offshore drilling units may be encountered in the proximity of the route; safety zones of 500 metres (0.27 nautical miles) radius are established around all offshore structures.

Pilotage

Ships required to use the "mandatory route for tankers from North Hinder to the German Bight and vice versa" are referred to resolution A.486(XII), adopted on 19 November 1981, concerning the "Recommendation on the use of adequately qualified Deep-Sea Pilots in the North Sea, English Channel and Skagerrak".

Notes:

1. It is recommended that an efficient electronic position-fixing device appropriate for the area should be carried on board.

2. Numerous offshore structures situated within the limits of the separation zones and/or situated in the proximity of the route are equipped with X- and S-band RACONs.

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