On 11 Feb 2007, at 11:45, Susan Burchett wrote: >> >> Just some thoughts while we are talking about Car Tax as this is I >> believe >> is based upon the fuel consumption or perhaps more correctly on the >> emissions and linking this to the possible phasing out of Red >> Diesel, I >> thought it would be interesting to know what individual boats MPG >> are, >> but like everything I am sure this is not straight forward, What >> would be >> the best and most equitable way to measure a boats MPG any ideas. >> >> Brian >> > > How about hours per gallon/litre?
The only sensible measure IMHO but not a lot of use even then as there are too many variables [esp running engines to charge batteries] Also not a great way to 'tax' boating. In cars AIUI the rating is based on the original design specification. Whether or not the vehicle continues to meet this can be regulated to some extent by the MOT test process - that little probe they shove up the car's exhaust. I'm not sure that many boaters would enjoy submitting to an annual test to establish the emissions from their propulsion devices which are probably not used in accordance with what was in the mind of the designer of the base engines. You know, things intended to propel BMC vans, buses, cranes, generator sets &c. Have I upset enough of you now? :>) Baz
