Chain Locker Overboard Drain Question - Page 2 - SailNet Community
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post #11 of 13 Old 04-11-2012
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Re: Chain Locker Overboard Drain Question

Unless you meticulously clean chain as it comes aboard all that crud will drain to low spot. Bilge or locker drain, take your pick.
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post #12 of 13 Old 04-11-2012
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Re: Chain Locker Overboard Drain Question

Yep, I agree. That's why I have a saltwater washdown system to blast off the mud and crud as the chain and rode come aboard. There's some nasty stuff on the bottom of our bays and it sure puts out a pungent aroma.

Cheers,

Gary
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post #13 of 13 Old 04-12-2012
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Re: Chain Locker Overboard Drain Question

Quote:
Originally Posted by reka30 View Post
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When you say "depends on the boat"... does anyone know of boats that use some water control on the inside of the hole?

If so, why? If no one does - this must not be an issue?


One scenario I was thinking of we beating to wind, hole is dipping under the waves as you go down.... it goes underwater until you come back up.
Don't forget to take the Bernoulli principle into account. One of the reasons clam shell covers are used is to create that area of vacuum, caused by water flowing around the clam shell. This will help prevent water from traveling back up the drain while the boat is maintaining forward progress.

If your drain is below the waterline when it's not moving, then you've got other problems.

As an aside, our locker drains into the bilge and will likely stay that way. The locker is accessible from the forward berth, and the doors are just louvered teak. The bottom of the locker is right at the waterline, and I don't want to tempt the gremlins by drilling a hole that close to the tipping point.
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