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Hi Glen. In principle that should work, but in practice it may be harder to
implement. If you made something "breakable" and it got worn down or weakened
over time, would it still work?
My thrusters don't penetrate the hull (except for the electrical wires) so
a breakable shaft is still possible, but I'd be concerned about
reliability.
My thoughts gravitate more toward a release mechanism rather than a planned
" failure point".
With a breakable shaft, maybe you bump into something like a rock or even
the dock, and there goes your thruster.
My rear motor/rudder mounts could be adapted so they could drop free with
the removal of a pin where there's a 1/2 inch stainless bolt right now.
The side thruster/dive planes could be modified in much the same way. Other
than those two places, there's no where on my sub to snag something. It's pretty
smooth on the outside. I need to get some pictures up for you guys, but it
doesn't look much like a K boat. I have eliminated the legs/skids because of the
snag hazard and replaced it with a smooth keel shape which doubles as the drop
weight and has some rollers in it for moving the sub on land and launching from
a trailer. Not really anywhere to grab on that thing.
Frank D.
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