Under Water Repairing at Quy Nhon Anchorage – Emergency Hull Doubler Plate by VietNam Shiprepair
Is your Panamax bulk carrier suffering from a hull puncture allowing seawater into Ballast Tank No. 4 at Quy Nhon Anchorage? VietNam Shiprepair provides professional Under Water Repairing and Marine Services, specializing in emergency underwater repairs under full ABS Class supervision. We recently completed an urgent underwater repair on a Panamax bulk carrier at Quy Nhon Anchorage – a key central location in South Central Vietnam – after a puncture was discovered on the ship’s bottom, offset to the port side, allowing seawater to enter Ballast Tank No. 4. The repair involved a diving survey, crack-arresting holes, and the welding of a 300 × 300 × 10 mm doubler plate on the exterior, restoring the vessel’s required watertight integrity.
All repairs comply with IACS and IMO standards—learn more at IACS Standards. Our Marine Services are available at Quy Nhon Anchorage and across Vietnam, including Ho Chi Minh Port and Anchorage, Hai Phong Port, and Phu My Port – Vung Tau Anchorage, with full capability to support vessels at any port or anchorage nationwide.
Hull puncture before Under Water Repairing at Quy Nhon Anchorage.
Importance of Under Water Repairing for Watertight Integrity
Absolute watertight integrity is a fundamental safety requirement for any vessel. When a hull puncture allows seawater to enter a ballast tank, the vessel’s stability, structural safety, and operational readiness are immediately compromised. On a Panamax bulk carrier, such an incident can quickly escalate into a serious safety and commercial risk. Professional Under Water Repairing by VietNam Shiprepair restores the watertight boundary without the need for dry-docking, enabling the vessel to continue safe operations while fully complying with ABS Class requirements.
Professional Under Water Repairing Process under ABS Supervision
VietNam Shiprepair executed the following controlled process for the emergency underwater repair at Quy Nhon Anchorage:
Mobilized a certified diving team approved by both the shipowner and ABS Class.
Conducted a detailed underwater survey to precisely locate the puncture, document the damage with photographs and video recordings, and assess the extent of the crack.
Developed and submitted the repair plan for ABS approval, including welding procedures, welder qualifications, and material certificates.
Drilled two 15 mm diameter holes at both ends of the crack to prevent further propagation.
Fitted and welded a 300 × 300 × 10 mm doubler plate on the exterior of the hull using ABS-approved welding procedures, certified welders, and approved materials.
Performed a thorough leakage check to confirm that water ingress into Ballast Tank No. 4 had been completely stopped.
Obtained final ABS surveyor endorsement for the completed Under Water Repairing.
This systematic underwater approach restored full watertight integrity in the shortest possible time without requiring dry-docking.
Minimizing Downtime with Efficient Marine Services
A hull puncture that allows seawater into a ballast tank poses an immediate threat to safe operation and can lead to costly delays. VietNam Shiprepair’s Marine Services focus on rapid mobilization of certified divers, precise underwater execution, and close coordination with ABS Class so that critical Under Water Repairing is completed efficiently while fully satisfying class and safety requirements.
In addition to specialized Under Water Repairing, VietNam Shiprepair provides comprehensive Marine Services across Vietnam, including:
Underwater cleaning
In-water survey
Underwater Repairing
Motor Re-winding
Machinery/Recondition Engine Component
Turbocharger Overhauling
Main Engine Overhauling & Repairing
Hull Repairing (Steel Works and Piping replacing)
Engine services
VDR services
Wood Chips Vessel: Feeder Conveyor Belt Bonding Services ( Hot bonding method & Cold bonding Method)
Hydraulic System Services: Hydraulic Pump Overhauling, Hatch Cover Piston Overhauling,…v.v
We support vessels at Quy Nhon Anchorage, Ho Chi Minh Port and Anchorage, Hai Phong Port, Phu My Port – Vung Tau Anchorage, and all other ports and anchorages throughout Vietnam.
Completed Under Water Repairing – doubler plate in place and leakage stopped at Quy Nhon Anchorage.
Benefits of Choosing VietNam Shiprepair for Under Water Repairing
Selecting VietNam Shiprepair for Under Water Repairing delivers speed, full class compliance, and operational safety. We manage the entire process — from certified diving survey and documentation to crack arresting, doubler plate welding, leakage testing, and final ABS endorsement — ensuring the vessel regains absolute watertight integrity. With extensive experience in emergency underwater repairs on Panamax bulk carriers and a proven record of resolving critical hull defects, we minimize risk and keep your vessel operational.
VietNam Shiprepair’s Commitment to Excellence
Every Under Water Repairing project is executed with rigorous planning, ABS-approved procedures, certified divers and welders, and strict quality control. We ensure that the temporary doubler plate solution fully stops water ingress and meets class requirements. Choose VietNam Shiprepair for reliable, professional Marine Services.
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Completed Under Water Repairing – doubler plate in place and leakage stopped at Quy Nhon Anchorage.
