refueling at sea ????

[Journeyman]

Originally Posted by Suijin

In a pinch you can even do without the short hose. Just wrap the rag around the tube coming out of the jerry can, put your mouth to the edge, and blow into the can. It takes shockingly little pressure to get the fuel flowing.

thanks everyone.
Suijin - that works amazingly well with a water jerry can I tried. And only one hose to clean afterwards.

[Lepke]

It sounds like we're talking about gasoline...
Normally fueling at the dock you shut down, and I assume you won't want to do that at sea.
As you fill the tanks, a cloud of gas vapor is leaving the tank. If that is near the intake for the engines it could draw explosive vapor into the engine room. Turning on the bilge blower might make it worse. (Draw in even more)
An auxiliary tank or bigger tanks would be better and safer. If you're going twice as big or more you should talk to a stability expert. You can get fuel bladders made to fit odd shapes. I've only used them with diesel, but about $1/gallon to have built for a big tank
Whenever I think of myself as an expert on anything, I think of this old definition:
X is a mathematical unknown and spert is a drip of water under pressure...
Therefor expert must be some unknown drip under pressure.