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Hi James. Yes, my "soft" ballast tanks will vent through a nipple into
the sub, where the pipes go through two valves before exiting the sub near the
hatch. These pipes inside will have a HP air connection to "blow ballast" and
another "T" and valve for sub flooding and/or pushing the water out of the sub.
Not sure how useful that will be but I don't want to cut in a 2 inch thru-hull
in the bottom of the sub for flooding. Frank D.
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