Diesel v Petrol - at what premium marine petrol engines sensible?

[2hullsonemarinaberth]

Different Approach

I agree mainly with what has been said previously, but decided on a different approach. I wanted a twin engine boat to enable trips to the Channel Islands and West Country in reasonable safety, but decided I did not want the noise or cost of a large inboard engined boat. I opted for a 30' Motorcat that offers reasonable (relative) comfort, but with twin 50hp outboards. This gives me up to 20 knots should I require, and range to cruise decent distances between fill ups.
I am still working out the sort of economy v speed that I can get from my boat, but with twin 135litre tanks, it gives me a fair chance off getting to the next marine petrol pump without worrying.
Incidentally, I wish more petrol powered boatowners (the boats not the owners), would make their requests for more petrol availability, a bit more vociferously. You never know - marinas may even put in facilities where possible. It seems that there are an ever increasing number of boats afloat that are fitted with huge outboards, and they don't sip diesel!

 

[Sheppy]

Can anyone offer any service/parts comparison for petrol/diesel? I'm always lead to believe that diesel servicing cost are much higher than petrol but I'm not entirely sure that's true. I'm quite sure parts costs will be higher for a modern diesel, but then when economies of scales start to kick in, are they really more expensive? Seems to me that any marine component is ridiculously expensive anyway. After all, I've just have to fork out £300 for an electronic throttle sensor which would have cost £50 for a car!