Learning the HARD way...
Join Date: Jan 2007
Location: Boston / Ft Myers Area
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...And the reason that they make through hulls with NPS fittings is so that you can cut the through hull fitting to the correct length, and still screw the fitting into the adapter, or flanged seacock.
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USCG Licensed OUPV Captain, ASA 101/103/104/105/106/118 Certified Instructor - Also certified in Recreational Marine Electrical Systems