Originally Posted by bedajim
I don't understand if it's rated at 225 it's rated at 225, I assume you either need a letter from the builder stating more hp is ok to keep the insurance company happy or you take a risk ?
Most Insurance companys DO undrestand. Mine have a maximum speed to length ratio, which for a sub 6m Rib is 50 knots.Not sure the figures for pluss 6m but even with a 250hp on the 6.8, I'm certain I won't be speeding in excess of 50knts! So the point moot.
The thing is, Hull rateings are flexable and open to change,the trouble is the manufacturer has to pay ( several grand) each time they up-rate any particular hull.Things move on,as is the nature of things,sometime it takes time for manufactures to catch up..ESPECIALY when it costs them.
You can see this clearly if you look at the older rateings for alot of hulls,they have steadley increased.The Ribcraft 585 I think was only rated at 100hp in the early years, now its 150!A 50% increase.
My old Rib Mr Jingles an R.C.545 was originaly rated at 90hp! A deeper hull and only 40cm shorter than a 585,when I wanted to up-rate the power with a 130e-tec I contacted them,and they explained the situation regarding rateings. When I re-powered, it Made a good boat into a great one!
So,in short if the Boat can take it,And the Insurance company can take it =NO problem!
Ofcourse we're talking keeping the insurance premiums standard,if you wanted to go even faster or Race ect you could,but it would cost you more,I hope this helps.