[PSUBS-MAILIST] Vertical thrusters

[David Colombo via Personal_Submersibles]

Ok guys, looking for comments on potential issues with vertical thrusters.
This morning I laid in the first vert thruster in the wing to mock up the
attaching bracket to the hull. The twelve inch hole will go thru the wing.
The questions are:
1) hold the prop flush with top surface or raised  slightly. I will be
fabbing a grill cover.
2) as the prop can draw water from the bottom as well as thru the thruster
tube, any concerns with prop wash being pushed out more laterally vs
vertically. Wondering if i need to have a collar at least as deep as the
prop?
 You might be also wondering why I have 101 lb vertical thrusters. Never
know when you might need to do a barrel roll maneuver.
I appreciate the feedback
David
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