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Old 17 August 2010, 08:08   #21
Cypman's Avatar
Country: UK - Isle of Man
Town: Douglas
Length: no boat
Join Date: Aug 2006
Posts: 337
The single engine installation is offset to allow for the rotational torque effect of the propellor. It is most noticeable on shorter hull lengths allied to higher powered OBs. Offset will also reduce the tendancy for a boat to run with a lateral "list".

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Old 18 August 2010, 03:15   #22
Country: UK - Scotland
Boat name: Wildheart
Make: Humber/Delta Seasafe
Length: 5m +
Engine: Merc 60 Clamshell
MMSI: 235068449
Join Date: Apr 2007
Posts: 4,539
.....and will find it's own equilibrium. If you got two figting each other it's a different kettle of fish. There's far better verse than I can write on the Boston Whaler chatrooms - just search "twin engine" on there.

An inch or so offset won't make a huge difference - the planing pad (if you got one) is likely that wide! it's when you move a couple of feet to the side where the main body of the "V" is in full effect it will get significant.

Remember also you steer to go straight. The engine may not necessarily be exactly aligned with the forward motion of the boat

I still reckon the props need looked at tho'.

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