As a matter of policy, it’s probably best that the scupper drains always be crossed. That way there is little chance of water getting into the cockpit when heeled over.
As a matter of practicality, I think it depends on the boat. My 25 mk1 was plumbed port to port. The cockpit sole is about 6” above the waterline and the scuppers are about 18” off the centerline; and the boat has a beam less than 9 feet. At heel angles of 15 degrees or so you had wet feet. When I redid the seacocks (replacing the old gate valves) and replaced hoses, I crossed the lines. My Newport 28 (A C&C design) had scuppers aft that drained through the transom just above the waterline. When motoring, the transom squatted down and your feet got wet. No point is crossing the hoses, so I learned to steer from forward in the cockpit. On my 38, there are 4 scuppers plumbed to 2 seacocks, with the port scuppers going to the port seacock. But the cockpit sole is 12 to 16 inches above the waterline, the scuppers are about 18” off center, and the beam is over 12 feet. So the boat would need to heel to almost 45 degree for the scuppers to be below the waterline, and that takes a LOT of wind (plus it’s SLOW). There is almost no room back there to cross the hoses. And I need to be able to take the starboard hose out in order to access the steering and some of the other stuff in the “basement”. So I have no plans to reroute the hoses. Alex, you probably need to look at the geography of your boat and do what seems to work best for you. Rick Brass Washington, NC
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