> My 1970 Willard 36 has original Vosper Thornycroft > Stabilizers, I believe is a forerunner to Naiad. The > electrical contacts are rather noisy, and there is a > distinct knock to them (worn bushing I suppose), but > they have worked for 35 years - and several trips to > Mexico and Florida from California with previous > owners. I think the immediate forerunner of Naiads were called "Dol-Fins" !! At least, my Naiad manuals have a whole 3-page chapter on "How the Naiad improves on the Dol-fin" :)