bilge water after the pump stops
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Category: Hints & Tips
Forum Name: 415/418
Forum Description: 415/418 Hints, Tips and News
URL: https://www.myhanse.com/forum_posts.asp?TID=15028
Printed Date: 27 March 2026 at 03:51
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Topic: bilge water after the pump stops
Posted By: Vdragon
Subject: bilge water after the pump stops
Date Posted: 23 March 2025 at 03:25
I have been doing some spring cleaning of my 418, and this year in the Pacific Northwest we grew a lot green gunk over the winter. A few weeks later I came back and found water under the sink, in the wine rack compartment, and around the toilet water sea cock. I vacuumed it all up, wondering if I had a leak, or if it was from cleaning, or all the incessant rain. I checked a few days later, everything still dry. Two weeks later, water was back under the sink and wine rack. Now I started to worry more about a leak. I vacuumed up the water, and by chance decided to put the vacuum up to the drain hole of the wine rack compartment. Lots of water came through. So then I took up the center floor board, and sure enough, lots of water in the open well. Then I looked in the hole in the hump between the open well and keel plate well, and saw water in there two. So I bought a manual 1/2 liter extractor pump and pulled out at least 6 more liters from that location. Anyone know just how many liters of water remain in the bilge after the bilge pump runs dry and shuts off? By my estimate so far, 10 liters, that I know off. Also any other places I should check? The good news is I don’t think I have a leak, and all of the times I found subsequent water was likely water in another location making its way to a visible location as the boat rocked in the storm waves.
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Vince, Hanse 418 in Seattle
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Replies:
Posted By: Tranquillity
Date Posted: 23 March 2025 at 19:52
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Unfortunately the grid traps a lot of water and every time you heal it pops out in a different spot! Do you have a dehumidifier on board as this sucks out more than you can imagine 😉
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Posted By: Vdragon
Date Posted: 25 March 2025 at 20:57
Thank you for the reply. I hadn't needed one up til now, but that is a great suggestion. Thanks
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Vince, Hanse 418 in Seattle
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Posted By: Ratbasher
Date Posted: 26 March 2025 at 07:03
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Hi Vince; I'd second Tranquility's suggestion of a dehumidifier. Its one of the most useful bits of kit you can have if living onboard for any length of time. Although the link is for a UK magazine you'll probably be able to get the same models over there. I got the Meaco DD8L junior and its been a godsend in so many way. It's running as I type...
https://www.yachtingmonthly.com/gear/best-boat-dehumidifier-11-models-to-keep-your-boat-dry-84907" rel="nofollow - Best boat dehumidifier: 7 models tested to keep your boat dry - Yachting Monthly
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H400 (2008) 'Wight Leopard' Gosport, UK
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Posted By: Vdragon
Date Posted: 26 March 2025 at 16:34
Thank you for the link!
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Vince, Hanse 418 in Seattle
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Posted By: Vdragon
Date Posted: 26 March 2025 at 16:41
Which outlet do you plug in your dehumidifier? Or does it matter which one? I was running a small electric heater over the winter, using the outlet under the Nav Table, but it quickly drained the house batteries. I would have thought that when on shore power, the batteries would be bypassed, so I am wondering if there are some outlets that are configured like this, and others are not. Or is there a setting I need to change on the power panel? Thanks, Vince
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Vince, Hanse 418 in Seattle
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