Precision Underwater Solutions
Specialized Marine Contracting & Commercial Diving Services
Commercial Diving
- ADCI Certified dive teams
- Underwater burning & welding
- Hazmat diving capabilities
- 24/7 Emergency response
Vessel Maintenance
- Hull cleaning & scrubbing
- Propeller polishing
- Intake & thruster cleaning
- Sea strainer maintenance
Inspection & Survey
- USCG & Naval vessel inspections
- Non-destructive testing (NDT)
- Cathodic protection (Zincs)
- Video reporting & survey
Marine Construction
- Pile driving & encapsulation
- Bulkhead repair & restoration
- Pier demolition & reconstruction
- Heavy salvage operations
Safety. Compliance. Execution.
With decades of operational experience, Keystone Marine consists exclusively of certified professionals maintaining rigorous compliance with US Coast Guard, Department of Defense, and OSHA safety standards.