RE: A sub question

[Ray Keefer <Ray.Keefer@eng.Sun.COM>]

Hi Richard,

> The sub I am designing has two thrusters with 360 degree freedom on
> opposite sides of the hull.  I could still make it slightly positive and
> simply use the thrusters to counteract the bouyancy when stopped.  The
> problem is this would tend to raise/stir the silt.  Maybe a reasonable
> tradeoff.
> 

May not be much of a problem since to prevent your submersible from floating
up you will have to thrust down, or I should say push your submersible
down. So the thrust wake will be upward away from the silt.

Regards,
Ray