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Blue Gum's galley sink, its twin drain plumbing, and a fold down galley seat (updated october 8, 2012).  

September 24, 2012. Alan sent in pictures and a detailed description of his twin drain galley sink, its plumbing, and a really interesting fold down galley seat (minor edits).

Note shallow (for draining) and deeper sections, as well as the twin drains

The idea of two drains is so that the sink will drain fully whether heeled to starboard or to port. With a central drain like most sinks have - you are left with a pool of water to mop out at the end.

On Blue Gum there is now a ball valve directly under each sink drain (instead of a plug - see picture below) and a seacock on the hull - all easily accessed - and they will all be open only while the sink is drained out. Either both sink drains are then closed or the seacock is closed so there is no possibility of water causing back-flooding.

I have frequently, since I had a boat with a sink, got up in the morning, got underway then had breakfast and then washed up underway. When I first sailed Blue Gum I found that a few cupfuls of water would come into the sink if I was heeled hard on port tack - until I found a simple solution.

The sink drain hose was coupled to the starboard cockpit drain which exited the hull a couple of inches above the normal waterline at the forward end of the cockpit well. (All S&S 24 Falcon's are set up this way) No S&S 24 Falcon has ever sunk because ot this set up as far as I am aware. All Falcon sinks are as close as practicable to the centreline to the of the hull. There are no valves in the line from the sink or the cockpit drain since it is normally above the waterline.

The simple solution I found to water coming back up the drain line was to cut a piece of PVC pipe about 1 1/4 inches inside diameter at an angle of about 25 degrees to the centre line so that I ended up with a half cone shape. This was glued to the hull with the pointed end facing forward and the open end just past the drain hole in the hull. This then acts as a venturi bailer. In fact while underway on port tack you could hear gurgling noises as air was sucked down the sink drain unless I put the plug in.

Prior to fitting that PVC piece I would occasionly lose my sink water when on port tack as surging water in the drain hose caused by the boat motion pushed the plug out. No more of that after the PVC cone was fitted. I intend fitting a PVC cone piece again over the sink outlet which is now on the hull below the sink since my cockpit well now drains out through the transom. This will ensure that no water can surge back up the hose when heeled hard on port tack while the sink is emptying - or should the drain be accidently be forgotten to be closed.

Webmaster Note: Rice Puff box cartons are the latest in cabin sole protective covering

This is my folding seat so I can work at the galley sitting down while under way. Took a bit to get the geometry right - but now works very well. On a previous boat I had a table opposite the galley so made a sliding seat so it could be used facing the galley or facing the table and when not in use it slid inder the table. That worked brilliantly!


Here's another picture of the galley - you can just see the seat folded up in front of the sink -

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