My C36 has a drain on the hull. If this turns out to be your anchor locker drain, maybe consider installing a drain directly through the hull and plug this one. It might involve changing the slope of the compartment, which might be more trouble than its worth.
By installing a hull drain to the outside you would eliminate the discharge into the bilge. I like to minimize what goes into my bilge. Just a thought.
Congrats on the boat.
Odyssey, '79 CSY 44 Cutter
Channel Islands, CA
"There is no unhappiness like the misery of sighting land (and work) again after a cheerful, careless voyage."