RE: Dickinson vs Sig Marine heaters
FF's water deck iron is a chimney base that sits on the deck, and has a "moat" around the chimney. I have a "deck iron" without, that sits on a 1" piece of teak that in turn is on the GRP. None of this part gets very hot. Those with the "water" unit rarely have water in them, but could, if they were glowing, put water in to cool them off.
In our waters, you don't need the H style chimney top. Those may be necessary in hurricane prone Fla, but here, not so much. I use a regular chimney top , a cylinder about 1.5 x the dia of the chimney, with a baffle over the opening to keep the rain out. It works just fine, even in a moderate breeze. The most I have had to do in a real blow is turn up the fan.
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