WALSH MARINE
21.
OYSTER HERITAGE
12002/AF
Skin Fittings and other through Hull Apertures The original valves are blakes seacocks which you do not see anymore on new boats they are too expensive. Several valves have been replaced with the inferior modern type ball valves which are probably what we call "non marine type" nickel plated brass. It is difficult to read the markings. Preferred are marine type bronze or dzr brass but they are difficult to find. Even Hallberg Rassy are using these non marine type now and they are acceptable under the appropriate iso standard which does not go far enough. They have no more than 5 year approved service life but are acceptable for use provided that they are periodically removed and serviced and internally inspected. It is not possible for me to see the internal condition of the valves or seacocks. The external condition was good except for one blakes for cockpit drain which has minor previous leak. If some were replaced then there was likely a problem with those valves. One ball valve in engine compartment for engine raw water without handle but a new handle has been provided by sellers. Hoses were double clipped and the clips not corroded. No plastic through hulls or valves below waterline. Above waterline the plastic necks without UV deterioration or cracks. Below waterline no wastages and a sample of through hull necks scraped and seen to be without the pink colour of dezincification. The blakes seacocks have the old type flush fitting necks. The speed log transducer is missing the impeller. Speed by GPS is available.
Newer type with no dezincification or wastages
Old type flush fitting necks
Page 23 of 76