(937) 435-4650office@rumfordgroup.com
Home▸ Solutions▸ Asset Areas▸ Ships & Offshore Structures

Ships & Offshore
Structures

  • Surface-tolerant repairs and coatings for hulls, decks, ballast tanks, and offshore steel
  • Applied afloat or in the splash zone on damp and wetted surfaces
  • No hot work required
The Challenge

Marine and offshore steel corrodes faster than almost anything else — immersed, splashed, and salt-laden, often while the asset is in service and cannot be dry-docked or shut down. Hot work at sea and offshore is heavily restricted, and conventional coatings will not bond to the damp, contaminated surfaces that are unavoidable in a marine environment.

A Real Rumford Example
Vessel hull worn and pitted below the waterline Before
The Problem
Hull Pitted Below The Waterline

Corrosion and erosion had worn and pitted the hull plate below the waterline, with the old coating breaking down where access is hardest.

Surface wear · Pitting · Coating breakdown

Hover for the Belzona result →
Hull rebuilt and coated with Belzona 5811 (Immersion Grade) After — Belzona
The Solution
Rebuilt & Coated With Belzona 5811

Pitted plate rebuilt and the hull coated with Belzona 5811 Immersion Grade — cold applied to damp, manually prepared steel for long-term immersion protection.

Immersion protection · No hot work · Smooth hydrodynamic finish

Cold applied · long-term immersion protection against corrosion

Outcomes vary by component, load, and access — contact Rumford Industrial Group for a project-specific assessment.

Hulls, decks, ballast and cargo tanks, bilge areas, risers, splash zones, and offshore structural steel suffer corrosion, erosion, and impact damage. The most vulnerable areas — the waterline and splash zone — are precisely where access is hardest and surfaces are wettest.

Belzona surface-tolerant composites and coatings are formulated to bond to damp, wetted, and manually prepared steel, and to cure even underwater, so repairs can be made afloat and in the splash zone. Applied cold by Rumford Industrial Group, they eliminate hot work and keep vessels and structures in service.

Belzona Solutions for This Application
Structural & Pressure Vessel Repair
Erosion/corrosion resistant coatings for marine structures (risers, pilings, offshore wind towers), SuperWrap composite wraps for pressurized, safety-critical pipes and vessels per ISO 24817/ASME PCC-2, rubber cladding/fender repair as a vulcanization alternative, and cold plate bonding for worn or corroded decks.
Propulsion & Steering Gear Repair
Corrosion repair with galvanic isolation on jet tubes, kort nozzles, and bow thrusters, plus cavitation damage repair on rudders, stabilisers, kort nozzles, and cylinder liners.
Component Forming & Equipment Alignment
100% solids, non-shrink materials for forming pintles, bearing housings, and bush seats, along with chocking/grouting systems for aligning heavy equipment and laying propulsion system foundations.
Ancillary Equipment & Tank Lining Protection
Corrosion and erosion repair coatings for onboard ancillary equipment (heat exchangers, valves, pumps) and internal tank lining coatings, including options approved for potable water contact.

Specific Belzona product recommendations available on request — contact Rumford Industrial Group for a free technical consultation.

What Belzona Can Do for Ships & Offshore Structures
+
Rebuild general erosion damage
Restore metal lost to erosion on hulls, structures, and equipment back to original profile.
+
Apply erosion–corrosion resistant coatings
Protect surfaces against combined erosive and corrosive marine attack.
+
Rebuild oversized pintles & pintle housings
Reform worn steering gear pintles and housings to correct tolerances without machining.
+
Bond pintle sleeves
Secure sleeves in place with a load-bearing, non-shrink bond line.
+
Reinforce cargo tank bottoms
Rebuild and strengthen thinned tank bottom plate in situ.
+
Rebuild & protect propeller shafts
Rebuild worn or corroded shaft areas and coat against further attack.
+
Repair seal areas on variable pitch propellers
Restore damaged sealing faces to stop leakage and ingress.
+
Create compression shims & facings
Cast load-bearing shims and mating faces that match irregular surfaces exactly.
+
Reseat & isolate bearing bushes
Re-form bush seats and provide electrical isolation to limit galvanic corrosion.
+
Create seals
Form in-place gaskets and seals on irregular or damaged flange faces.
+
Create seals around deck mounted machinery
Seal machinery bases and penetrations against water ingress.
+
Seal deck joints
Flexible systems seal moving deck and expansion joints.
+
Protect insulation
Waterproof and encapsulate insulation to prevent corrosion under insulation.
+
Repair fenders & floating hoses
Rebuild and bond torn rubber fenders and hose covers as a vulcanization alternative.
+
Cast mud valves
Form tight-sealing valve faces directly in place.
+
Protect down hole tools
Abrasion and corrosion resistant coatings extend tool service life.
+
Pot cables
Encapsulate cable ends and glands for sealing and electrical insulation.
+
Apply safety grip systems
Non-skid surfacing for decks, walkways, and stair treads.
+
Fair propeller bolts
Smooth over bolt recesses to restore hydrodynamic efficiency.
+
Cast cutlass bearings
Form replacement bearing surfaces in place for an exact fit.
+
Rebuild power blocks
Restore worn and corroded power block components to working profile.
+
Bond underwater
Materials that displace water to bond and cure while submerged.
+
Handle underwater applications
Repair and coat submerged steel without dry-docking.
+
Repair risers
Rebuild and wrap corroded risers, including composite wraps to ISO 24817/ASME PCC-2.
See it on our interactive Solution Maps

See how marine and offshore steel is repaired and protected in Belzona's interactive maps.