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Go Back   SailNet Community > On Board > Gear & Maintenance > Raw Water Cooling System Questions
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Thread: Raw Water Cooling System Questions Reply to Thread
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Topic Review (Newest First)
11-17-2008 08:07 PM
scottyt on my hunter 27 the head intake is under the v berth starboard side, right next to the off shore holdng tank pump out. the sink has a large valve behind the galley cabinet under the cockpit. i have the hunter plumbing drawings and mine matches the drawing. i wonder if someone added a salt water rinse for the sink, how many faucets does your boat have? the only seacocks are the head flush and over board pump under the vberth, and the raw water intake under the engine per the drawing. the other must be added
11-17-2008 06:29 PM
Faster
Quote:
Originally Posted by ckgreenman View Post
Assuming it's above the waterline. The way it was described I think the seacock in question might be below.
A below-water-line seacock will still drain a sink, as long as the bottom of the sink itself is above the waterline!
11-17-2008 05:35 PM
sailingdog Given that it was described as being beneath the engine... I'd guess it was below the water line.
Quote:
Originally Posted by ckgreenman View Post
Assuming it's above the waterline. The way it was described I think the seacock in question might be below.
11-17-2008 05:31 PM
ckgreenman
Quote:
Originally Posted by sailingdog View Post
Especially if the boat was outfitted for long distance cruising, since the water in most harbors is rather nasty...
Kinda like the water at RV parks. We always hooked up a 2 stage filter between the water supply and the hook up.
11-17-2008 05:27 PM
ckgreenman
Quote:
Originally Posted by Ham1sh View Post
At the risk of being overly simple, I suggest that the second through-hull is to drain galley sink water. It is on my boat.
Assuming it's above the waterline. The way it was described I think the seacock in question might be below.
11-17-2008 05:20 PM
Ham1sh At the risk of being overly simple, I suggest that the second through-hull is to drain galley sink water. It is on my boat.
11-17-2008 05:13 PM
sailingdog Especially if the boat was outfitted for long distance cruising, since the water in most harbors is rather nasty...
Quote:
Originally Posted by Faster View Post
Plenty of boats have had salt water galley sink intakes, either hand or electric pumps, for rinsing dishes, or even for washing them, to conserve fresh water supplies for drinking/food preparation.
11-17-2008 05:03 PM
Faster Plenty of boats have had salt water galley sink intakes, either hand or electric pumps, for rinsing dishes, or even for washing them, to conserve fresh water supplies for drinking/food preparation.
11-17-2008 04:29 PM
ckgreenman Key word being "likely". I remember the raw water intake for my Dad's Chris Craft was back by the engine even though the head was quite a bit forward.

The only way to figure out what it's for is to follow it. Head or water maker are the only things I can think of that would use raw water. Most sinks and showers (at least that I have ever used) use fresh water.
11-17-2008 04:20 PM
sailingdog If the head is forward, the raw water seacock for it is also likely forward, not back in the engine compartment.
Quote:
Originally Posted by ckgreenman View Post
This was my thought. If the boat is equipped with a true marine head it's probably pulling raw water as well.
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