Underwater Welding
Class-approved wet and hyperbaric welding on hull plating, ballast tanks, and structural members — executed by AWS D3.6 certified welders.
View CapabilityFour decades of subsea precision. Charlie Frey delivers underwater ship repair, marine maintenance, and marine construction — anywhere in the world, on time, on spec.
For more than forty years, Charlie Frey has kept the world's commercial vessels operating — pier-side, at anchor, or at sea. Our class-approved divers, engineers, and naval architects execute complex subsea work to exacting standards, minimizing off-hire time and maximizing fleet availability.
CHARLES FREY · FOUNDER & PRINCIPAL ENGINEER
A seasoned subsea commercial engineer with more than thirty years of experience, Charles carries forward a family legacy of dedication and innovation in subsea engineering.
Starting in the family business, he honed his skills and grew into a trusted industry leader — balancing deep technical expertise with disciplined commercial strategy. His commitment to tailored solutions ensures safe, efficient operations while meeting the most complex subsea challenges.
Driven by a passion for excellence, Charles leads a team dedicated to pushing the boundaries of subsea engineering, delivering innovative, high-quality solutions to clients worldwide.
Five integrated disciplines, one accountable crew. Whether you need an emergency propeller polish overnight or a full dry-dock deferral across a twelve-ship fleet, our teams mobilize fast and document every step.
Class-approved wet and hyperbaric welding on hull plating, ballast tanks, and structural members — executed by AWS D3.6 certified welders.
View CapabilitySurface restoration to ISO 484 Class S. Restores hydrodynamic efficiency, cuts fuel consumption by up to 8%, and lowers cavitation noise signatures.
View CapabilityEco-compliant in-water hull cleaning with effluent capture. Restores vessel speed and fuel efficiency without disrupting antifouling coatings.
View CapabilityIn-situ rope cutter installation, blade replacement, and seal repair on azimuth and tunnel thrusters — no dry-docking required.
View CapabilityPile driving, pier rehabilitation, intake structures, and subsea concrete work — from survey to sign-off, delivered to marine engineering standards.
View CapabilityRound-the-clock dive teams on stand-by. Average mobilization under six hours in home ports, under twenty-four hours globally.
Dispatch NowCharlie Frey's cloud-based reporting platform delivers live inspection data, photo and video evidence, thickness gauge readouts, and corrective action logs directly to technical superintendents — while divers are still in the water.
Integrated with common fleet management systems including ABS NS, DNV ShipManager, and IBM Maximo.
See the PlatformOur hub-and-spoke model keeps class-approved dive crews within operational range of every major commercial port. Rapid response is engineered into the network, not bolted on.
Permanent stations in the Americas, Europe, Middle East, and Asia-Pacific, backed by a global roster of freelance master divers on retainer.
View Global Presence
LAT 1.2897° N / LON 103.8501° E — SINGAPORE
A sampling of recent deliveries. Each engagement is documented in our cloud platform and available to classification societies on demand.
All Case StudiesClass S restoration after fishing gear entanglement, delivered at anchor off Rotterdam in under 40 hours — vessel maintained schedule.
In-water replacement of main tunnel thruster seals, eliminating the need for a 14-day dry-dock diversion. Saved an estimated $2.1M in deferred revenue.
Structural repair of 42 reinforced concrete piles using our proprietary subsea form system. Delivered ahead of schedule with zero lost-time incidents.
Speak to an engineering account manager. First response within 30 minutes — day or night, anywhere in the world.