Step 01
Brief & scope
We start from the drawings, the class society involved and the yard's production schedule. The output: a scope, a crew plan and a delivery date that is realistic against your master schedule.
Capability I · Hull & vessel
I
Shipbuilding & Repair
From AMELS-series luxury-yacht hulls to commercial vessels, fishing boats, military and multi-purpose ships, we build, refit and repair. Delivered by IACS-affiliated welders, with our own machinery park in Gdynia and a mobile repair service that travels across Northern Europe.
What we do
Scope at a glance
Each of the areas below is delivered in-house, from concept through execution to commissioning and service.
- 01
New Vessel Construction
Hull and superstructure construction for luxury yachts and commercial vessels. Continuously engaged at DAMEN Shipyards Gdynia since 2018, delivering the AMELS series 6001–6011.
- Steel and aluminium hull construction
- Superstructure fabrication and outfitting
- IACS-affiliated welder certifications
- Schedule discipline aligned with yard production plans
- 02
Refit & Repair
Structural repairs, modernizations and conversions on commercial vessels and yachts. We handle the welding, fabrication and finishing required to bring vessels back to classification standards.
- Structural steel repairs and reinforcement
- Conversions and modernizations
- Survey-driven repair scopes
- 03
Machinery & Piping
Mechanical installation work on propulsion, auxiliary systems and piping, including thrusters, valves, pumps and main system runs.
- Thruster and propulsion system mounting
- Piping runs, fabrication and pressure testing
- Mechanical equipment installation and alignment
- 04
Electrical & Automation on board
On-vessel electrical installation, low-current routing and integration, handled by the same in-house electrical team that covers our industrial scope.
- Cable routing to shipbuilding standards
- Roxtec cable transit installation
- Onboard automation and control systems
- 05
Mobile Repair Service
When a vessel can't come to us, we come to the vessel. Crews equipped for repair work on partner yards across Germany, Poland and the wider Baltic region.
- Cross-border deployments (DE / PL / Baltic)
- On-site welding and structural repair
- Coordinated with partner-yard production schedules
Project enquiry
A hull, refit or repair project to discuss?
Send us a short brief and we'll come back with a concrete proposal, typical response within two business days.
Standards we build to
Class-society approval is the entry ticket.
Welding to international standards is not an optional layer. It defines whether a vessel passes survey on schedule or sits in a yard waiting for rework. RS Marine builds to that reality from day one.
IACS-affiliated welder certifications
The International Association of Classification Societies (IACS) sets the welder qualification framework that operators like Lloyd's Register, DNV, Bureau Veritas and ABS reference when surveying a vessel. Every welder we field carries an IACS-affiliated certification appropriate for the material grade, joint position and process they are running on a given block. Tickets are tracked in our internal roster and verified at project mobilisation, including continuity, since classification societies require evidence that a welder has actually been welding regularly.
Material control and traceability
Steel and aluminium grades used in classed builds need to match the design specification and be traceable to mill certificates. Our workflow tracks material from incoming inspection through cutting, fit-up and welding, the same way our partner yards (DAMEN, Muehlhan, Karstensen, Remontowa, NAUTA, PGZ) expect.
NDT, weld documentation, survey readiness
Where the build calls for non-destructive testing, visual, dye-penetrant, ultrasonic, radiographic, we either deliver it in-house or coordinate with the yard's appointed NDT provider. Weld maps, WPS/PQR references and welder traceability are documented in a form that lets the attending surveyor sign off in one visit rather than three.
How we work
From kickoff to delivery, in four steps.
Step 02
Mobilisation
Welder qualifications are matched to the scope. Material specs are confirmed against the design. Equipment moves to site, either to your yard or to ours in Gdynia.
Step 03
Build & QA
Production runs to documented WPS. Daily QA tracks weld maps, NDT and any non-conformity in real time, with corrective action initiated the same shift rather than at the survey visit.
Step 04
Handover
Documentation package, welder certs, WPS/PQR, NDT reports, weld maps, material certs, handed over in the format your class society and yard QA require.
FAQ
Questions we get from yards and operators.
Which classification societies do you build to?
Whichever the project requires. Our welder certifications follow the IACS framework, which means tickets are recognised by Lloyd's Register, DNV, Bureau Veritas, ABS, RINA, ClassNK and others. We confirm the specific society at scope definition.
Can you deploy crews outside Poland?
Yes. We work regularly on partner yards in Germany, primarily with Muehlhan Polska, and have crews mobilised across the wider Baltic region. Logistics, accommodation and material handling are part of the scope, not an afterthought.
Do you handle the full hull or sub-assemblies only?
Both. We deliver full hull and superstructure for new builds (AMELS 6001–6011 with DAMEN is the long-running reference) and we also take sub-assembly scopes on partner-yard programmes, blocks, sections, outfitting brackets.
How is welder qualification verified?
Tickets are tracked in our internal welder roster with continuity records. At mobilisation, we hand over the relevant qualification documents to the yard QA team and to the attending surveyor. We do not send a welder to a project they are not qualified for.
What about repairs and conversions?
Structural repairs, refits and conversions are core scope. We have done classic-yacht hull repair, commercial-vessel refit and military-vessel work, including the work delivered with PGZ Stocznia Wojenna. Mobile-repair crews can reach a vessel that cannot come to us.