
1 
This Order may be cited as the General Lighthouse Authorities (Beacons: Hyperbolic Systems) Order 1986 and shall come into operation on 1st January 1987.
2 
All references to a beacon in Part XI of the Merchant Shipping Act 1894 shall be construed as including equipment provided for broadcasts in the frequency range 70kHz-130kHz from the North British, North Scottish, Hebridean, Northumbrian, English and South West British transmitter chains of the Racal-Decca Marine Navigation Limited's hyperbolic electronic position-fixing system, known as the Decca Navigator System, together with the support facilities provided by that company for those chains, in the circumstances that, and for so long as, those chains are operated in accordance with any contract in that behalf between that Company and the General Lighthouse Authorities.
John Moore
Secretary of State for Transport
19th December 1986