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Structural Wastage
Corroded bulkhead, deck, bracket, platform or cargo-area steel may require cropped renewal rather than surface treatment.
SVC Marine — Steel Work Package Control
Ship Steel Repair & Hot Work in Vietnam
SVC Marine executes vessel steel renewal, pipe welding, structural repair, fabrication and controlled hot work at Vietnamese ports, shipyards and drydocks. Our scope can cover onboard measurement, material preparation, fit-up, welding, inspection follow-up and completion reporting.
A small area of wasted steel, a leaking overboard pipe or an incomplete class item can hold up cargo operations, repair close-out or vessel departure.
Ship repair desk: shiprepair@svcmarine.com · Phone / WhatsApp: +84 988 701 231
Steel RenewalBulkhead RepairPipe & Overboard RenewalControlled Hot WorkNDT / Test Follow-UpClass Close-Out
Steel Work PackageScope Under Review
Bulkhead insert plateFit-up stage
Repair boundary
01Defect and repair boundaryMeasured
02Material grade and thicknessConfirmed
03Hot work permit and isolationVessel to clear
04Welding and inspection planAgreed
05Close-out evidenceOn completion
Work package format only. No cutting, welding or grinding starts until the vessel and local parties have cleared the permit, whatever the schedule pressure.
Can SVC Marine carry out ship steel repair and hot work in Vietnam?
Yes. SVC Marine handles selected vessel steel repair, steel renewal, pipe welding, fabrication and controlled hot work at Vietnamese ports, shipyards and drydocks. The work package may include onboard inspection, measurement, repair-scope review, material preparation, crop and renewal, insert plate fit-up, welding, NDT or testing follow-up and completion reporting.
Hot work feasibility depends on the repair location, vessel condition, port or shipyard rules, cargo and tank condition, safe access, Permit to Work, isolation, gas-free requirements, fire watch, class involvement and available repair time.
SVC Marine does not treat steel repair as a manpower-only job. The work must be controlled from the defect and repair boundary through final inspection and close-out evidence.
Why the job needs a work package
When Vessel Steel Damage Becomes an Operational Issue
Steel damage rarely stops a vessel on its own. What stops the vessel is an unapproved repair method, a missing permit, or an item class will not close.
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Pipe Leakage
A wasted or leaking overboard, cooling-water, ballast, bilge, fire-main or deck-service pipe may require measurement, spool fabrication, installation and testing.
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Class or Survey Item
A class condition, recommendation, damage survey or thickness-measurement finding may require an approved repair scope and inspection evidence.
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Port-Stay Time Pressure
Material, manpower, access and approval may need to be prepared before the vessel arrives.
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Unsafe Temporary Repair
A temporary patch or previous repair may not be suitable as a permanent class or operational solution.
The correct repair method depends on location, structural significance, remaining thickness, system duty, class requirement and vessel schedule.
Repair record
Bulkhead Steel Renewal — From Cropping to Completion
One repair, four controlled stages. The photographs below are from SVC Marine bulkhead renewal work and are shown in the order the job was executed.
01
Defect and Repair Boundary
- Inspect wasted or damaged area
- Confirm repair dimensions
- Review access from both sides
- Identify adjacent structure, piping or insulation
- Confirm whether class attendance is required
- Mark the crop boundary
02
Material and Plate Preparation
- Confirm plate grade and thickness
- Prepare replacement insert plate
- Cut and grind plate edges
- Prepare welding edges in accordance with the required repair method
- Verify dimensions before transfer onboard
03
Fit-Up and Alignment
- Position insert plate
- Check gap and alignment
- Use temporary dogs or strongbacks where appropriate
- Control distortion
- Confirm surrounding steel condition
- Obtain inspection before final welding where required
04
Welding and Inspection
- Execute welding in the required sequence
- Control heat input and distortion
- Remove temporary attachments correctly
- Grind and dress the repair area where required
- Arrange visual inspection or NDT
- Restore coating after acceptance
These photographs document practical repair stages. Final technical acceptance depends on the approved scope, material, welding procedure, inspection result and responsible approving party.
Pipe and overboard renewal
Pipe Renewal and Workshop-Fabricated Spools
A leaking or corroded vessel pipe frequently requires more than onboard welding. The job may involve system isolation, pipe measurement, material confirmation, flange preparation, workshop fabrication, onboard fitting and a leak, pressure or function test.
- Overboard pipe section renewal
- Sea-water and cooling-water piping
- Ballast and bilge piping
- Fire-main and deck-service piping
- Pipe spool fabrication
- Flange renewal
- Pipe support and clamp renewal
- Penetration or surrounding-steel repair
- Onboard removal and installation
- Leak, pressure or function testing
Controls that may be required first
- System shutdown
- Drainage
- Isolation
- Lock-out / tag-out
- Blank flange or physical isolation
- Gas-free confirmation
- Sea-side or overboard precautions
- Class attendance
- Pressure or leak testing
Not every pipe can be repaired while the system remains operational. Whether the system must be shut down, drained and isolated is decided against the system duty and the vessel’s own procedure, not against the repair schedule.
Repair scope
Vessel Steel Repair Scope
Five work packages, grouped by where the steel sits and what controls it attracts.
Structural Steel Renewal
- Bulkhead insert plate renewal
- Deck plate renewal
- Cargo-hold internal steel
- Brackets and stiffeners
- Platforms and access structures
- Small foundations
- Local structural repair
Deck and Cargo Area
- Hatch-cover steel items
- Hatch coaming and drain channels
- Cleats, wedges and stoppers
- Cargo-hold access ladders
- Handrails and guardrails
- Mooring-area steel
- Deck fittings and supports
Pipe and System Steelwork
- Pipe section renewal
- Overboard pipes
- Flanges and spools
- Pipe supports and clamps
- Vent, air and sounding pipes
- Penetration-related steelwork
Workshop Fabrication
- Insert plates
- Pipe spools
- Brackets
- Supports
- Foundations
- Platforms
- Temporary sea fastening
- Repair materials prepared before vessel arrival
Drydock Steel Renewal
- Bottom or shell-related repair where approved
- Keel or bottom-steel renewal
- Underwater damage repair
- Heavy structural renewal
- Class-critical steel work
- Larger cargo-hold repair
Underwater, shell, bottom and class-critical work will normally require shipyard or drydock controls. It is not offered as berth or anchorage work.
Repair location
Berth, Anchorage, Workshop or Drydock?
Where the work is done is a technical decision, not a commercial one. Choosing the wrong location is what turns a two-day repair into a missed sailing.
Alongside
Repair at Berth
- Port and terminal allow the work
- Cargo condition permits
- Safe access exists
- Hot work approval is available
- Repair duration fits the port stay
Limited scope
Repair at Anchorage
- Port permission is available
- Launch transfer is practical
- Weather and sea conditions are suitable
- Tools and materials can be transferred safely
- Fire and emergency controls are adequate
Ashore
Workshop Fabrication
- Accurate measurements can be taken onboard
- New components can be prepared ashore
- Onboard hot work time should be reduced
- Material and equipment are easier to control ashore
Controlled yard
Drydock or Shipyard
- Structural scope is extensive
- Shell or bottom steel is involved
- Class requires controlled yard repair
- Heavy lifting, staging or tank access is needed
- Underwater damage is present
- Port-side hot work is not permitted
Not every repair can be completed at berth or anchorage. Where the scope exceeds what the location safely allows, SVC Marine says so and prices the drydock or shipyard route instead.
Hot work control
What Must Be Cleared Before Hot Work Starts?
Eight gates stand between an agreed repair scope and the first arc. A gate that cannot be cleared is reported to the vessel as a limitation, not worked around.
Gate 01
Scope Approval
- Repair location
- Repair dimensions
- Drawing or sketch
- Permanent or temporary repair
- Owner and manager instruction
- Class involvement
Gate 02
Vessel Condition
- Cargo condition
- Tank contents
- Adjacent systems
- Fuel or oil exposure
- Insulation and hidden spaces
- Access from opposite side
Gate 03
Isolation
- Shutdown
- Drainage
- Lock-out / tag-out
- Physical isolation
- Blank flange where required
- Electrical isolation
Gate 04
Atmosphere and Access
- Gas-free certificate where applicable
- Ventilation
- Confined-space entry control
- Safe staging or scaffolding
- Lighting
- Rescue arrangement
Gate 05
Welding Documentation
- Welder qualification
- Applicable WPS
- Supporting PQR where required
- Welding consumable
- Base material
- Welding position and process
Not every job automatically has an approved WPS or a class-certified welder. Documents are verified case by case.
Gate 06
Fire Protection
- Hot Work Permit
- Risk assessment
- Toolbox talk
- Fire watch
- Fire-fighting equipment
- Spark and slag containment
- Opposite-side monitoring
Gate 07
Inspection
- Fit-up inspection
- Visual inspection
- NDT where required
- Dimensional check
- Pressure or leak test
- Class witness where required
Gate 08
Close-Out
- Completed-repair photographs
- Test records
- NDT report
- Material and welder documents
- Outstanding-item list
- Owner report
- Class close-out where applicable
No welding, cutting or grinding should proceed until the responsible vessel and local parties have approved the work and applicable safety controls are in place.
Execution flow
How SVC Marine Executes a Steel Repair Job
01
Receive Repair Evidence
Required
- Vessel details
- Location
- ETA and ETD
- Damage photographs
- Dimensions
- Drawing or class comment
- Required completion date
02
Onboard Inspection and Measurement
Confirm
- Actual repair boundary
- Steel or pipe dimensions
- Access
- Adjacent systems
- Material transfer route
- Safety limitations
03
Define the Work Package
Prepare
- Repair method
- Material requirement
- Manpower
- Tools
- Workshop scope
- Permit requirements
- Inspection and testing plan
04
Material and Workshop Preparation
May include
- Plate cutting
- Edge preparation
- Pipe spool fabrication
- Flange preparation
- Bracket or support fabrication
- Packing and vessel dispatch
05
Onboard Fit-Up and Welding
Control
- Cropping
- Surface preparation
- Fit-up
- Alignment
- Welding sequence
- Distortion
- Fire watch
- Daily progress
06
Inspection and Testing
May include
- Visual inspection
- Dimensional check
- NDT
- Pressure test
- Leak test
- Function test
- Class or owner attendance
07
Repair Close-Out
Provide
- Before, during and after photographs
- Completion status
- Test or NDT records
- Remaining defects
- Owner-side report
- Class follow-up status
Documentation
Documents That May Be Required
Which of these are actually needed is set by the repair, not by the contractor. A small bracket and a class-recorded bulkhead renewal do not carry the same document load.
Repair Inputs
- Repair specification
- Class comment
- Drawing or sketch
- Thickness measurements
- Damage photographs
- Material requirement
Welding Records
- Welder certificate
- WPS
- PQR where applicable
- Welding-process details
- Consumable details
Material Records
- Material grade
- Plate or pipe thickness
- Material certificate where required
- Heat number or traceability where required
Inspection Records
- Fit-up acceptance
- Visual inspection
- NDT report
- Pressure-test record
- Leak-test or function-test result
Completion Records
- Progress photographs
- Completion photographs
- Daily report
- Punch list
- Class close-out evidence
- Owner acceptance record
Required documentation depends on repair significance, class instruction, owner requirement and the party responsible for final acceptance.
Inspection and testing
Inspection After Welding
Depending on the repair location and technical requirement, inspection may include visual testing, penetrant testing, magnetic-particle testing, ultrasonic testing or another approved NDT method.
SVC Marine can arrange or follow qualified NDT attendance and collect the resulting records where required. SVC Marine is not the certifying NDT body.
- Leak test
- Hydrostatic pressure test
- Air test where technically approved
- Vacuum or function test
- Operational check with vessel crew
- Dimensional and visual check
The test method, test pressure and acceptance criteria must be confirmed for the specific system before testing begins.
Vung Ang workshop
Workshop Preparation Before Vessel Attendance
SVC Marine’s Vietnam operations and workshop presence at Vung Ang allows selected plates, pipe spools, brackets, foundations and repair materials to be prepared before dispatch to a vessel, shipyard or onboard repair team.
- Plate cutting
- Grinding and edge preparation
- Pipe spool fabrication
- Flange fitting
- Bracket and support fabrication
- Small steel assembly
- Tool and consumable preparation
- Packing and job identification
Final onboard fit depends on accurate vessel measurement, material confirmation and the actual condition found after damaged steel or piping is opened.
Project evidence
Steel Repair Project Records
Published SVC Marine records covering steel cropping, keel and bottom-plate renewal, and container-vessel structural work.
Keel Plate Renewal in Drydock
Steel cropping, keel or bottom-plate renewal and drydock repair attendance.
Keel Steel Renewal After Grounding Damage
Repair record involving damaged keel or bottom steel after grounding-related damage.
Cell Guide Renewal for Container Vessel
Cell-guide steel renewal, alignment and welding work for a container vessel.
Quotation checklist
What to Send for a Steel Repair Quotation
The photographs and dimensions decide the quotation. Without them the price is a guess, and a guessed price is renegotiated on site.
Vessel Details
- Vessel name
- IMO number
- Vessel type
- Flag and class
- Year built
- Current location
- ETA and ETD
- Agent contact
Repair Details
- Repair location onboard
- Damage photographs and videos
- Approximate length and width
- Existing thickness
- Required renewal thickness
- Material grade
- Drawing or sketch
- Class or survey comment
Execution Conditions
- Berth, anchorage, shipyard or drydock
- Cargo condition
- Tank condition
- Hot work permission status
- Gas-free requirement
- Confined-space requirement
- Required scaffolding or staging
- Required completion date
Inspection Requirements
- Class attendance
- Material certificate
- Welder certificate
- WPS / PQR
- NDT
- Pressure or leak test
- Owner reporting format
Why owners use SVC Marine
Why Use SVC Marine for Vessel Steel Repair?
Work Package Control
SVC Marine connects the defect, material, manpower, permit, welding, inspection and close-out stages into one controlled local repair package.
Workshop and Onboard Execution
Selected steel and pipe components can be measured onboard, prepared ashore and returned for fitting.
Owner-Side Visibility
Owners and managers receive progress photographs, completion status, outstanding issues and repair records.
Class and Survey Follow-Up
Where required, SVC Marine follows local class attendance, NDT, test records and document close-out.
Integrated Repair Capability
- Afloat repair
- Drydock attendance
- Spare parts
- Technical superintendent attendance
- Owner’s representative attendance
Related services
Related SVC Marine Services
Frequently asked questions
Ship Steel Repair & Hot Work — FAQ
Can SVC Marine carry out ship steel repair in Vietnam?
Yes. SVC Marine handles selected steel renewal, pipe welding, fabrication, bulkhead repair, deck repair and controlled hot work at Vietnamese ports, shipyards and drydocks.
Can SVC Marine repair a damaged bulkhead?
Selected bulkhead repairs may be handled through cropping, insert-plate preparation, fit-up, welding and inspection, subject to structural significance, class requirement, access and approved repair scope.
Can hot work be performed while a vessel is alongside?
Selected work may be possible if approved by the vessel, port, terminal or shipyard. Cargo condition, tank condition, isolation, gas-free requirements, fire watch and Permit to Work must be reviewed first.
Can steel repair be carried out at anchorage?
Only limited jobs may be feasible. Port permission, launch access, weather, material transfer, fire protection, vessel condition and emergency arrangements must be reviewed.
Can SVC Marine fabricate an overboard pipe or pipe spool?
Yes, selected pipes and spools can be measured, prepared or fabricated ashore and delivered for onboard fitting. The material, dimensions, flange standard, system duty and testing requirement must be confirmed.
Are certified welders available?
SVC Marine can mobilize experienced and qualified welders for suitable jobs. Welder certification, welding process, WPS, PQR and class requirements must be reviewed for each scope.
Can SVC Marine arrange NDT after welding?
SVC Marine can arrange or follow qualified NDT attendance where required. The method and acceptance criteria depend on the repair scope and approving party.
Does every steel repair require class attendance?
No. Class involvement depends on the location, extent and structural or system significance of the repair. The owner or manager should confirm the requirement with the vessel’s class society.
Can a doubler plate be used instead of cropped renewal?
Only where technically acceptable and approved by the responsible owner, manager and class or other approving party. A doubler plate should not automatically be treated as a permanent alternative to proper steel renewal.
Can SVC Marine complete emergency repair before sailing?
SVC Marine can review feasibility and mobilize available manpower, materials and workshop preparation. Completion depends on scope, access, permits, inspection requirements and the available port stay.
Safety and scope notice
Controlled Hot Work — Not Manpower Supply Alone
All welding, cutting, heating and grinding remain subject to vessel approval, port or shipyard rules, Permit to Work, risk assessment, isolation, gas-free requirements, fire watch, safe access and applicable class or statutory requirements.
SVC Marine may execute and control the agreed local repair scope but does not replace:
- Vessel master
- Ship manager
- Classification society
- Flag administration
- Port authority
- Terminal
- Shipyard safety department
- Certified NDT provider
- Other responsible approving authorities
Final repair and statutory acceptance remains with the relevant authorized party.
Send the damage · Define the work package
Need Steel Renewal or Controlled Hot Work in Vietnam?
Send the vessel details, damage photographs, repair dimensions, location, ETA, required completion date and class requirements. SVC Marine will review the repair route, manpower, material, workshop preparation and inspection requirements.
Ship repair: shiprepair@svcmarine.com
Operations: operation@svcmarine.com
Phone / WhatsApp: +84 988 701 231
Operations: operation@svcmarine.com
Phone / WhatsApp: +84 988 701 231