The Dali Posted January 28, 2022 Report Share Posted January 28, 2022 So, we are about to start fiberglassing the hull and I know that will take a lot of time and energy, but in the meantime I want to start looking at gas tank options given lead times for ordering. The Marissa is spec'd for a 16 gallon tank (permanent, although the plans also show a below-deck removable option). We would like a permanent tank and will be routing the fill line to the side top rail. Any suggestions on tanks I should look at that would fit below-deck? It is a sealed deck, but we were toying with the idea of making a gas tank cover hatch in case we have to access the tank. Any thoughts on that approach? Thanks! Quote Link to comment Share on other sites More sharing options...
Chick Ludwig Posted January 29, 2022 Report Share Posted January 29, 2022 I would make a gas tank cover hatch. Often the tank is foamed in place. Read up on that if you are considering foaming it in. There are some dangers in it. Quote Link to comment Share on other sites More sharing options...
Reacher Posted February 20, 2022 Report Share Posted February 20, 2022 I installed permanent gas tanks on a boat I built 23 years ago. They are plastic tanks (polyethylene?) and are chocked in place with hold down brackets. I can disassemble some structure to remove the tanks but it has never been necessary. I think it is important that you have an inspection cap or port so you can access the fill hose connection, the fuel line connection, the gauge sending unit and any grounding wire that might run from the tank to the deck plate. I also think it is good to be able to access the fill hose connection to the deck plate. Quote Link to comment Share on other sites More sharing options...
lenm Posted March 1, 2022 Report Share Posted March 1, 2022 Not sure what the USCG regulations are but consider the use of some solid piping where allows. It's amazing how fuel smell can build up in confined spaces (permeate through fuel hosing and less than perfect fittings). Only use the USCG rated fuel hose. Personally, I used a plexiglass hatch porthole so I can see what is going on in the cofferdam for the fuel tank. Quote Link to comment Share on other sites More sharing options...
The Dali Posted March 16, 2022 Author Report Share Posted March 16, 2022 Great updates everyone, thanks! Quote Link to comment Share on other sites More sharing options...
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