Wondering where other mk 1 boats have their bilge pump outlet. My boat has the standard manual pump out via the transom, but the electric pump (2 actually) had their outlets in the topsides, visible in the attached picture.
I removed and glassed over these holes as I was worried about siphoning water into the boat when under way and heeled, and it turned out that one of the two fittings wasn't even really bedded so it leaked water in all by itself.
Now I am thinking the best bet is to take the auto bilge pump outlet back under the engine, under the aft berth, and Tee it into the manual bilge pump hose at the transom. Any other bright ideas? Some race boats I know have the bilge pump near midships but right up at the sheer line, this doesn't appeal much to me as it will streak the boat and pump out onto my dock most of the time.
Jason V
Vancouver, BC, Canada
Nimue,
I think that most experts will tell you it is not a good idea to "Tee" into an existing hose for bilge pumps. It is a better idea to provide a dedicated thru hull for each pump. Attached is a picture of how I positioned mine.
PS-make sure there is a siphon break, and the hose makes a loop high up under the deck/hull joint.
Tom Sokoloski
C36/375IA Past Commodore
Noank, CT
Tom,
My thru-hulls come out the transom, as opposed to downward out the hull. They are above waterline at all times. My friend who is a surveyor thought teeing in here would be ok, do most of the other boats have these things exit under the counter like your picture?
My boat has the exhaust under the counter, but the other holes go out the transom (1x bilge pump, 2x cockpit drains, 1x propane locker vent)
Jason V
Vancouver, BC, Canada
My pump exits on the transom, but the hose from the pump includes a flapper check valve in the bilge. I find that sometimes the pump does not draw a suction unless I squeeze the hose between the pump and the valve to get it started. (Deeper water seems to work w/o the squeeze). I assume that w/o the valve the large amount of water in the hose from the pump to the vacuum break would drain back into the bilge. anyone have another solution to water returning to the bilge?
Bob & Lauren
S/V Lunea
'86TR, #624
Newport, RI
On my MK I the electric bilge exits out high on the starboard transom.
Bill
s/v Lucky
1984 MK I Hull #266
San Antonio, Texas
I just installed a backup bilge pump with a battery backup tied in to a very small solar panel. I installed (as it has been suggested on this web site) an antisyphoning loop under the counter in the galley. I then proceeded to run the remaining 1/2" drain line out to where Bill placed his through hull on the transom. I found it somewhat easier to place mine on the port side however.
Glenn Druhot
Carpe Diem
New Bern, NC
35* 6' 10" N / 77* 2' 30" W
2001 C36, Hull #1965
Std Rig; Wing Keel; M35B