Join Date: Apr 2013
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Re: What are these things?
BTW, it is plastic, and has what appears to be a grip-like texture of lines around what seems to be a cap (all in the picture), but it also seems to be a one-piece structure that does not unscrew. I have seen these on sailboats before (without the wire) and I have to think it is a very common part on sailboats, but...
As I say, it does seem to be related to the bilge, at least due to its location