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The depth was 40ft and the tether was
regular 70ohm antenna cable. I was also using it for communication. The
problems I encountered were that the cable sinks and gets wrapped around
everything. My next version had small floats every 6ft but it they got tangled
around stuff. My next try was to run the cable through a number of 8’ lengths
of 3/8” PVC pipes with foam pipe insulation for flotation. This actually
worked pretty good- it never tangled and as the sub descended it would take
down the lengths of floating plastic pipe 1 at a time. Surface support could
tell my depth by the number of pipes on the surface. But it was very bulky
since it couldn’t be rolled up and a real pain to haul around. A towed tether would probably be ok if it
were a line that float (instead of comm. cable) with a spring loaded release/
take up reel, but I still wouldn’t drag a long piece behind a sub unless
there were also a dependable means of getting away from it if it got tangled
(like a tool that could cut the line from inside the hull). Greg From: owner- Greg How deep were you
able to pull the buoy, and what diameter of tether did you use? Dean In a message dated 8/4/2009 8:17:29 A.M.
Central Daylight Time, greg@precisionplastics.com writes:
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