Sussing Out the Sneaky Ones

Water leaks often require sleuth work. Water is ever present above and below the waterline. Rain, washdown water and spray look for ways to seep in through the topsides. Beneath the waterline, water is pumped in through the engine and other machinery for cooling, and can find countless holes for thru-hull fittings, transducers and underwater lights. Hoses and clamps are critical for watertight integrity, as water patiently waits for any chance to sneak in and cause problems.

For instance, while prepping my boat for a trip to Nantucket, Massachusetts, one summer day years ago, I replaced a raw-water pump impeller. When I shut down the diesel after checking my work for leaks, I heard a drip.