Hi, I have the Navman Depth and Speed units... They can be "set and forget" simple, but also have some sophisticated functions if you want to play with them... What I like most is the large uncluttered display.
They lend themselves to mounting in a collar as Ralph suggested, and at 4.4 inches square, they will just cover the 4" dia. hole. As far as sealers go, it is my understanding the 3M 5200 is a powerful adhesive, and can make removal of the bedded part difficult. Polysulfides can attack some plastics, and some products are not intended for underwater use. I use polysulfide for thru-hulls and transducers, and never had a problem with leaks or removal. Bob Stockley Sundance #2436 --- In [email protected], "summerwind6264" <summerwind6...@...> wrote: > > I have a 1986 Catalina 27 that needs a new depth sounder. I think it is > original one, Horizon DS-1. I would like to replace with a low cost one and > one that will fit in 4"hole and 1 3/4 thru hull transducer. Any > recommendations? >
