What methods can be used to investigate watertight fittings?

• A. Slowly loosen dogs, door handle
• B. Tap with hammer
• C. Use a wrench to loosen bolts
• D. Open quickly to test

Answer: (A)

When testing watertight fittings, you want to control the release of the securing hardware so you can observe for leaks without forcing water through or damaging the seal. Slowly loosening the dogs (the latch hardware) and the door handle lets you progressively relieve clamp pressure while watching and listening for any seepage. This careful, gradual approach helps ensure the gasket seats properly and the seal remains intact under a controlled opening, reducing the risk of a sudden ingress of water.

Tapping with a hammer can deform or damage the hardware and the gasket, creating new leaks or compromising the seal. Using a wrench to loosen bolts applies force that can misalign or strip threads, potentially weakening the fit. Opening quickly to test produces a rapid pressure change that can rush water through any fault, endangering personnel and equipment overall.