Re: What is this Item, See Picture (below) ?
Typically the TV antennas are a bit larger.. I'd be leaning towards an older style GPS receiver antenna... but OTOH it's a bit big for that!?!
1984 Fast/Nicholson 345 "FastForward"
".. there is much you could do at sea with common sense.. and very little you could do without it.."
Capt G E Ericson (from "The Cruel Sea" by Nicholas Monsarrat)