Tender/Dinghy and gas tank storage

Keeps the cap vents slightly open so you don't pressurize the tank when the temperature is up but it doesn't slosh out. Tank into consideration expansion in the heat so the tank does not overflow thru the vent. Well ventilated area so any fumes can dissipate. Strapped down taking into consideration the natural state of the roll so the fuel sloshes side to side (likely the least distance) rather than against the fill over and over tempting spillage thru the vent. Non-slip mat underneath to reduce "rubbing" that can wear a hole in the bottom and also damage your deck. Away from flames, grills, electrical, and make sure everyone has situational awareness. Just about everything I can think of short of setting up a fueling station out of your diesel tanks and get a diesel tender. Gas problem solved.

If I can, I like having 2 portable boat fuel tanks, instead of cans you have to pour into the fuel tank, if the dinghy doesn't have a built in fuel tank. That way it's safe, no mess from pouring, you just unplug the fuel line to the outboard and then plug in the other tank.

No, DO NOT STORE gas cans in the engine room.......NEVER.

Jim, forget the 5 gallon tanks, a) buy a tender with a built in tank, and b) I thought you liked to fish....buy a Hell's Bay or Egret flats boat. And yes, have an onboard gas fueling station. Storing and filling 3 or 4 five gallon fuel tanks aboard will be a royal pain in the butt, and at 65 feet, yer gonna need all the room you can get. Besides by having a fueling station, and a built in tank on the tender, you've eliminated a potential fire problem. And yes a 16' flats boat is probably going to stick out both sides of your hard top, but not by much.

I've found leaving the vents open on portable tanks exacerbates any issues you might have with ethanol gas if you're forced to use that.

-Chris

Are you sure these tanks you see in engine rooms aren't spare diesel tanks used to refill fuel filters on the fly?

Yeah, I like an extra boat tank or two for the dinghy and store them underway in the dinghy. I use a quick disconnect on the dinghies fuel line and then just swap tanks......it's better to keep the fuel fresher anyways.....you can run one tank ALL of the way empty and then switch to the other even with the motor idling......Or, if I want 6 gallons for range, I'd prefer 2-3 gallon tanks, then switch and you're filling one tank with 98% fresh gasoline. ALWAYS use stabilizer in dinghy gas.