Journey sink backflow prevention

[tgr23]

I noticed that when we left a towel in our sink it was soaked after a day out on the ocean. Our fresh water system is never filled. I can only assume that water is backing up through the thru hull. Is that true? If so I need to plug that sink drain. Has anyone found the appropriate size expandable bilge plug? Or are we talking wine cork?

Thanks
Travis

 

[wahoo33417]

Travis. My sink can do the same thing in bumpy seas. I went for the low-brow fix. I got a few corks from Home Depot and one fit great.

We never use the sink, so the cork is pretty much a permanent addition. Would much rather have storage than the sink...

 

[DennisG01]

Corks are one way to go. Moeller makes expanding rubber plugs in a multitude of sizes - pretty cheap, too.

But... take a look at the drain hose between the sink and the thru hull. It sounds like it's a straight run? There "should" be an upward loop at the thru-hull fitting, before continuing to the sink.

 

[wahoo33417]

A loop would be a good idea. At least on my boat, I don't believe there is any easy way to access to take a look.

Rob