On our Tartan 27, there are two smallish cockpit drains that both empty to a starboard thru hull. The icebox on the port side (It's in a cockpit locker rather than in the galley, I found an electric space heater and a single burner stove in there) also also drains out the same thru hull.
I'm wondering why would this be set up that way? It would seem to me that if we are heeling to port, the water would go nowhere. I expected to look under the cockpit and see two thick gray pipes leading to thru hulls on opposite sides of the hull, not just one. The bend in the port hose there doesn't seem the best design to get water out. I could be wrong.
I've also read that enlarging the drains is a good idea; they do seem rather puny.