Marine Construction

From dock repairs to underwater infrastructure projects, we work with state, government, and private entities to execute large-scale marine construction.

What We Offer

Underwater Structural Inspections

Enviro-Tech Diving performs thorough underwater inspections using divers, HD imaging, and remotely operated vehicles (ROVs). We assess the condition of:

  • Timber, concrete, and steel piles
  • Floating docks, marinas, and mooring dolphins
  • Sheet pile walls and retaining structures
  • Dams, water gates, and water towers

These inspections help identify deterioration, corrosion, marine growth, and structural vulnerabilities before they lead to costly failures. We provide detailed reports with photographic documentation, NDT results, and repair recommendations.

Dock Rehabilitation & Pile Repair

We are a trusted partner for dock rehabilitation and pile repair across Alaska, Washington, Oregon, and California. Our team includes certified underwater welders and installers for advanced systems such as the Simpson Strong-Tie FX-70 jacket system. Services include:

  • Pile repair and jacket installations
  • Underwater welding and cutting
  • Timber cap and beam replacements
  • Cathodic protection systems and NDT testing

We restore structural integrity to aging waterfront facilities while minimizing disruption to operations.

Mooring Systems & Floating Structures

From small mooring buoys to commercial marina layouts, Enviro-Tech installs secure and stable anchoring systems. Our marine construction services include:

  • Mooring buoy installation and repair
  • Helix anchor installation
  • Floating dock installation and stabilization
  • Breakwater construction and maintenance

Our mooring solutions are built to withstand heavy use and environmental stress in high-traffic waterways.

Welding, Bracing & Anode Installation

For industrial facilities, we perform intake cleaning and grate clearing to maintain water flow and protect internal systems. Services include:

  • Sea suction and water intake cleaning
  • Screening grate removal and replacement
  • Debris clearing and jetting

This work is essential for operations like seafood processing, power generation, and municipal water systems.

Marine Intake Cleaning & Grate Services

For industrial facilities, we perform intake cleaning and grate clearing to maintain water flow and protect internal systems. Services include:

  • Sea suction and water intake cleaning
  • Screening grate removal and replacement
  • Debris clearing and jetting

This work is essential for operations like seafood processing, power generation, and municipal water systems.

Underwater Demolition & Debris Removal

We support marine construction and salvage projects with safe and efficient underwater demolition. Our team handles:

  • Debris removal from construction zones or storm damage
  • Removal of derelict or abandoned underwater infrastructure
  • Site preparation for new marine installations

Supporting Safe, Compliant Waterways

Our certified commercial divers and marine construction specialists perform a wide range of services—whether for new construction, routine maintenance, or emergency repairs. We work closely with municipalities, engineering firms, general contractors, and private marine operators to ensure underwater infrastructure remains safe, functional, and compliant with regulatory standards.

Related Projects

Cold Bay Dock Demolition

Client: State of Alaska
Location: Cold Bay

When a marine facility needed to replace deteriorated steel support piles beneath an active dock, Enviro-Tech Diving mobilized commercial divers and marine construction support personnel...

Water Tower Pipe Refitting

Client: WA State Municipality
Location: WA State Peninsula

A municipal water utility on Washington’s Olympic Peninsula required a new vertical pipeline extension inside an existing water storage tower to improve system reliability. Working...

Pre-Inspection UAV Survey

Client: Seafood Processing Plant
Location: Bristol Bay

In the remote and dynamic environment of Bristol Bay, a new waterfront plant development required precise planning and early-stage visibility to ensure successful construction in...

Level 1 Pile Inspection & Follow-Up – Tacoma, Washington

Client: Local Seafood Processor
Location: Tacoma

Marine infrastructure is constantly exposed to a challenging environment. Tides, vessel traffic, weather, and biological growth all contribute to gradual wear on docks and pilings....