Originally Posted by Colin F
i didn't say that, i just said the engine has remained bone dry.....
maybe the bench seat in front shields it but either way no water has entered the engine bay
Nah - it's good engine bay design, and decent intakes.
Ribcraft use an intake which baffles the water coming into it, lets it run down the side of the box to the bottom where the 2 big bilge pumps get it out ASAP. Some spray does reach the engine (if it's been an enthusiastic day) but otherwise it works really well.
And the other plus point, the intakes are ABOVE the top of the tubes (as are the other electrics).
Don't laugh - I've seen them in all sorts of stupid positions.
I got caught out crossing a sand bar with wind over tide with a heavy boat - and although we were going very slowly just trying to pick our way through, the waves were steep enough and short enough that we took 3 successive waves over the bow (green water). I didn't notice how much water was in the boat, until I realised that was why my feet were wet in my wellies. With the 2 pumps and the trunks it emptied amazingly fast. Also the contents of the engine box stayed dry.
There is another RIB (BWM?) in the compound, and that has a full width bay, but has drilled holes in the front of the box and the transom, glassed in some skin fittings, and then connected up and piped through to give some drainage 'through' the box - that might be worth thinking about. Luckily mine has enough space down the side of the box to fit the trunks with no problem.
Good to hear that everyone was OK!!
P.S. There isn't much electrical in the engine bay on a Yanmar 315 - what are the symptoms of your problem? I've had a starter relay failure - which had nothing to do with getting wet (immersed) - turn the key and nothing happens.