Boat Owner Guide

Do you clean and inspect dock pilings and seawalls?

Short answer: Yes. Underwater inspection of pilings and seawalls checks for heavy growth, marine-borer damage, and structural condition below the waterline — the hidden zone where dock and seawall problems quietly begin long before they show above the surface.

Your dock and seawall do their hardest work where you can’t see it. The underwater portion takes the constant load of tide, current, and marine life — and catching trouble there early is far cheaper than discovering it after a failure.

What happens below the waterline

Pilings and seawalls face two underwater threats. The first is heavy growth, which builds up and obscures the surface. The second, more serious, is marine borers — organisms that tunnel into wooden pilings and weaken them from the inside, often invisibly until the damage is advanced. Concrete and seawall caps have their own below-water wear worth keeping an eye on.

What an inspection reveals

  • The true condition of pilings and seawall below the tide line, on video.
  • Early borer or rot damage while it’s still small and manageable.
  • Growth and debris that should be cleared or monitored.

Staying ahead of it

A periodic underwater look gives you documented, plain-language insight into structures you otherwise never see — so you can plan maintenance on your terms instead of reacting to a surprise. If your pilings are unwrapped, that’s often a smart, simple step to extend their life, and an inspection is the right place to start that conversation.

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Precision beneath the waterline

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