Underwater Welding & Repair Services Singapore | West Squadron Marine
Underwater welding and repair services in Singapore by West Squadron Marine — comprehensive in-water structural repair: wet welding, dry hyperbaric welding, plate doublers, crack arrest, sea-chest blanking and emergency leak stoppage. AWS D3.6M certified, class-approved, MPA-registered. Call +65 8388 0288.
What is included in Underwater Welding & Repair?
Our underwater welding & repair scope covers the full life cycle of in-water structural intervention — from survey of the damage, through engineering of the repair, execution of the welding (wet or hyperbaric), NDT verification, and reinstatement of the coating & cathodic protection. We work on vessel hulls, sea chests, jetty piles, FPSO yokes, mooring chain hardware and offshore platform members.
Repair scopes we deliver
- Plate doubler — overlay plate welded over thinned or damaged hull section
- Insert / window patch — full plate replacement with hyperbaric weld
- Crack arrest holes — drilled at crack tip + welded restoration
- Sea-chest blanking — temporary or permanent closure for repair access
- Cofferdam — dry working environment created underwater for major repair
- Emergency leak stoppage — pile of woollen blankets, mechanical clamp, then welded patch
- Anode renewal — replacement of expended sacrificial anodes by underwater welding
Our Repair Process
- Mobilisation — within 6 hours for emergency, 24 hours for standard
- Damage survey — visual + UT + photo log, class surveyor coordinated if required
- Repair engineering — class-approved drawing, WPS/PQR, materials list
- Execution — AWS D3.6M certified diver-welders, wet or hyperbaric
- NDT — visual + UT + MPI/ECT as required by class
- Coating reinstatement — anti-corrosion paint, cathodic protection verification
- Class hand-over — final report, witness signatures, photo annex
Why West Squadron for Underwater Repair in Singapore
- AWS D3.6M certified Class A (hyperbaric) and Class B (wet) divers
- Class-approved WPS / PQR on file — ABS, BV, DNV, Lloyd’s Register, NK, RINA, IRS
- Single-source delivery — survey, design, weld, NDT, coating under one contract
- Singapore-based — fastest mobilisation in the region for vessels at anchorage
Frequently Asked Questions
Q1. Can underwater welding match dry-dock weld quality?
Ans: Hyperbaric welding (AWS Class A) achieves dry-dock quality and is accepted by class for primary structure. Wet welding (Class B) is for non-critical sections and temporary repairs.
Q2. How long does a typical hull plate repair take?
Ans: For a 1m × 1m plate doubler at the waterline: 2–3 days including survey, mobilisation, weld and NDT. Larger insert repairs: 5–7 days.
Q3. Do you provide post-repair coating?
Ans: Yes — coating reinstatement and cathodic protection verification are included as the final step of every repair scope.
Get a quote in 2 hours — Call +65 8388 0288 or request via our contact form.
