for a right hand screw (my tug was a left hand screw), ;
turn the rudder full left.

I understand what engine clockwise rotation and counterclockwise rotation
mean, but I'm not clear on which directions right and left screws refer to.

correct?

I hope so, because I got this little mnemonic aid (derivative of something
I learned when studying magnetic fields in school) where I hold the
appropriate hand in front of me, palm up with the thumb pointing forward
and then curl the fingers in a semi-fist.

The thumb represents the direction of the boat, the fingers indicate the
rotation of the engine and the direction the fingers point indicate the
sternwalking direction when the boat moves in the direction of the thumb.

So if right screw means CW rotation means right hand it all holds together.

-- Jim

    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    JimAgue
    For images of Acapulco to Golfito Passage made in March 1999,
    refer to: http://members.iex.net/~ague/images/NordhavnCruise
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

ague@iex.net writes:

I think, I hope I probably understand what you're saying. Yes, right
hand screw means CW when moving forwards. That what mine does and I
compensate quite nicely as per the example that I originally posted.
Gg