Originally Posted by Alan Priddy
DONT GO FOR Aluminium tanks in a RIB. They will pant and spring leaks quicker than you can say"how much?" each tim eyou fill it up.
That's a bit of a sweeping statement, hopefully based on your experiences from a crap tank builder!
Go to a company such as "the tank company" in Poole, and you won't get a problem. I've been using them for 15 years, and never had a failure. Not cheap, but quality never is. If you work on the formula of 2.5 x the cost of the fuel (petrol) the tank holds, you won't be far out! Assuming it's a pretty uniform shape of course