Electronic aids to navigation and sailing The chart tpaa In "Winsome", a Nicholson "43" finished by the Berthan Boat Co. Ltd., Lymington.

The navigational instruments, from left to right, are as follows: HESTIA electronic compass, HADRIAN dead reckoning computer with read-out dial immediately above it, HARRIER combined log and speedometer, HECTA echo-sounder, HELIOS radio-compass, HOMER radio receiver. Above HELIOS is a duplicate HADRIAN course indicator which, in conjunction with HELIOS, enables D.F. bearings of greatly increased accuracy to be obtained.

The navigator Is using the HERON D.F. aerial. In the cockpit the helmsman and sheets-men have repeater dials indicating speed, depth and compass heading, and the HEN6IST & HORSA dials show them the speed and direction of the relative wind.

These instruments comprise the 'H1 range of navigational and sailing instruments.

Designed and manufactured by BROOKES & GATEHOUSE LTD Bath Road, Lymington, Hants. Tel: Lymington 4252 wda banch In the U.S.A.: BROOKES & GATKHOtJSE IMC.

154 East Boston Post Road. Mamaroneck. New York 10543 159.