What is your opinion on this new small diesel from MerCruiser?
Our next RIB is going to be in 6.5m - 7m range and until now we only looked at outboards as we considered inboards (especially diesel) to be too expensive.
But, that has changed as this new diesel inboard is less expensive than some of the outboards we were considering!
It weighs some 300 kg including Alpha sterndrive, so it is somewhat heavier than a single outboard. Still, this shouldn't be too much for a 6.5m RIB.
I read a test of Askeladden 645 Beetle
powered by this engine. The boat weighs some 1500 kg with this engine and tops 32 knots. More interesting is the fuel consumption at cruise speed of 23 knots - only 0.65 l/nautical mile.
Do you think this engine could be installed in Ribcraft 6.5 or Ribtec 655? What kind of performance could I expect in that case? I'm not interested in racing so top speed is of no concern. However, cruising speed of around 30 knots is desirable.