Underwater welding, tremie concrete placement, pile encasement, epoxy grouting and structural repair, so an inspection finding does not end at a report when the condition calls for corrective work.
Most underwater contractors stop at the report. Zion Marine moves from inspection into the corrective work, repair, replacement, installation and construction below the waterline, so owners deal with one accountable contractor instead of a handoff chain.
Depending on the condition, structure and operating constraints, repair methods may include:
A structured path from the initial review to a deliverable the owner or engineer can act on.
We review the inspection findings and define the repair scope the condition actually requires, not more, not less.
Repair method, materials and sequence are selected for the submerged condition, flow and access constraints.
Surface-supplied divers perform the repair with the appropriate materials and equipment for the underwater environment.
The completed repair is verified and documented so the owner has a record of what was done and how.
Gates, outlets and concrete structures.
Piers, footings and pile systems.
Piles, caps and deck supports.
Walls, sheet pile and anchorage.
Screens, racks and structures.
Reservoirs, clearwells and basins.
Discharge structures and pipelines.
Dock and berth protection systems.
Repairs are planned around the actual environment, operational facilities, difficult access, poor visibility, submerged structures and limited shutdown windows. Every project is evaluated individually to determine the appropriate method, equipment, crew and operating limitations.
Infrastructure work is performed with surface-supplied diving: umbilical gas, voice communication, topside supervision and a standby diver. Why that matters →
Project examples tagged to this capability in the Project Library.
PortsOwner: Port Tampa Bay · GC: Russell Marine · Port Tampa Bay, Tampa, Florida · 2025–2026
Underwater installation of 294 sacrificial anodes (194 lb each) on the steel wharf substructure per the plans and specifications. Surface-supplied air with underwater welding and cutting, and a cathodic protection specialist on site for installation, monitoring and commissioning.
BridgesOwner: Georgia DOT · GC: Massana Construction · Georgia · 2024
Underwater pile preparation and installation of 148 linear feet of integral jackets, 34 to 60 in, on SR 2 over West Chickamauga Creek and SR 52 over the Conasauga River. Grade-level dredging and pumped fill were performed from floating platforms with surface-supplied air.
Marine ConstructionOwner: City of Orlando · Zion Marine (Prime Contractor) · Orlando, Florida · 2024–2025
Demolition of the existing structure and construction of the new waterfront and pier: pile driving, structure, deck and marine hardware. Zion Marine held the contract directly with the City of Orlando under IFB24-0439 and carried the performance and payment bonds.
Licensed general and marine contractor. ADCI-certified divers and supervisors. TRIR 0.0 as of 2026, EMR 0.83 as of 2026. Full credentials on the Qualifications page.
What to gather before scoping a dive inspection at a treatment facility, dam or bridge.
Read article →
How inspection and repair can be planned around live, operating infrastructure.
Read article →
How diver-guided dredging protects intakes, screens and structures during sediment removal.
Read article →When the condition is not yet known, Zion Marine begins with inspection and documentation, then moves directly into the repair scope the findings actually justify.
Tell us about the structure and the condition. We'll help determine the right repair method and scope.