The bottom line is if you're planning a trip offshore and your main method of transport is a petrol engine your going to have to plan ports of call far more closely. Whereas if the engine is diesel your pretty much assured that there will be a diesel pump ( which hopefully has diesel in it !! ).
Keep asking the questions, if you donít ask then youíll never get any wiser.
There are a lot of people who frequent these forums with lots of
hard sea miles and love RIBing, be it in a 4m or 15m boat, and will give advice freely
Regards and good luck