Hi Barbara, I have a 33-1 with the same configuration. I don't see any need to change it as It works well for draining small amounts of water. However, when you need to empty the cockpit in a hurry, say when its been filled after being pooped by a breaking wave, you need more drain cross-section. I added a 2" (or maybe its 1.5") drain from the cockpit aft bulkhead (as close to the cockpit floor as possible) angled down slightly to the transom. I can tell you that the last time I was up to my knees in water, I was pleased to have the extra drainage!
Best, David On Tue, Aug 1, 2017 at 6:37 PM, Barbara L. Hickson via CnC-List < cnc-list@cnc-list.com> wrote: > On my '76 33-1, the cockpit drains into thru hulls with inline ball valves > in a y configuration below the cockpit floor and then straight down thru > the hull, well beneath the waterline. It appears from line drawings that > this is the only practical configuration. If the drains were rerouted to > either side of the hull or to the stern above the waterline, there would a) > not be enough slope, and b) the outlets would allow water back into the > cockpit when heeling or with a following wave. > Has anyone done this, or am I correct in my assessment? Has anyone used > marelon replacement flanged seacocks? Their video says they are to be > screwed only to a backing plate and not screwed all the way thru the hull. > Seems like a good solution if it works. > Thx for any input. > Barbara Hickson > "Flight Risk" '76 33-1 > Charleston, SC > > >
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