Originally Posted by smj
With twin engines there's no need for the outboards to be steerable or the need to use the rudders for maneuverability.
Correct. I back into my slip every day. Once the speed drops below ~ 2 knots, it's all about the engines.
To back into a slip coast about 10-15 feet out from the row at no more than ~ 2 knots. Center the wheel
and don't touch it again. Put the outside engine
in to reverse, perhaps 1/2 throttle (inside engine
neutral) to slow the boat and begin the slide. As the boat stops in front of the slip (probably at a 45 degree angle at this point), put the inside engine in forward slow to continue the turn while holding the boat motionless. Minor adjustments will move the boat fore and aft and change the rate of spin. When you are close, reduce the forward engine and back in. Piece of cake.
Trivia: the CG test asks which way you should turn the wheel
on a twin screw boat to maximize the rate of turn. The assumption is that there is a rudder
behind the prop which will deflect the blast of the engine that is in forward. This is NOT the case for the PDQ, so using the rudder
is useless and often troublesome. It does make sense for twin screw MONOHULL
powerboats, where the screws are not widely spaced. However, the CG answer is wrong for this boat. Rely on the engines alone slow speed.