I too have Navigator 2 log (about 1985 - the grey transducer) from which the paddlewheel has gone AWOL. If you have an unwanted one (paddlewheel) I would be more than grateful to give it a good home on a Westerly Merlin. My very helpful chandler has been totally unsuccessful in locating any spares, receiving the same 'you must be joking mate' response as Brian in a message below