"I think I know how this movie ends..."
We replaced the old "basic package of three" on our Olson a few years ago.
Originals were Datmarine, DS, KM and Wind, installed in '88.
The new Raymarine hull transducers are removable for KM and DS, and the KM paddlewheel has the self-sealing unit. A seapage of water when you pull out the paddlewheel sure beats a gusher! :eek:
My biggest job was "shrinking" the three holes in the cabin back. As I recall, the cut-out for the Raymarine readouts was 1/2 inch smaller diameter than the old Datamarine holes....
So.... I took some pieces of scrap FRP laminate and first cut an accurate circle that would fit the old holes. Then I cut out the centers for the new ST60 heads. Then I used some thickened West epoxy to bond the resulting "rings" in place in each of the 3 openings. The good news is the the square bezels on the new ST60 faces just barely cover my work, and from the outside there is no sign of the changeover.
I would have to say that shrinking holes in a boat is a LOT harder than enlarging them!
It was a worthwhile project for me. Now I read true or apparant wind at the tap of a button. The large displays are wonderful to read at a distance, from the wheel. I do also plan to add the AP (Autohelm 4000S) to the bus sometime.
Always more projects!
Keep us posted.
Best,
Loren in PDX
Olson 34 Fresh Air