Re: Islander 30 fuel tank size
Keep in mind that what is standard is likely of no real value and stated specs may have varied from what was actually installed. If tanks have been replaced, a common issue, then it will be what ever someone put in. There are advantages to smaller tanks, but the big one is that it might have fit someplace easy to get to like a lazarette. The original my have been left (not a great thing) or may have have had to be cut apart to get it out, and a smaller one put in it's place. You can always add more tanks and there is a big advantage to having multiple tanks as it allows you to set up a polishing system. So you fill into one tank, then pump and filter it as you move it to the "day tank." That way if you take on bad fuel (another common thing) you can isolate it and treat it before it gets to the engine.