MARINE ADDITIVE MANUFACTURING
Metal 3D Printing for Marine & Offshore Engineering
Revolutionizing maritime supply chains with on-demand additive manufacturing. Certified, corrosion-resistant components — from propellers to heat exchangers — delivered in days, not months.
OVERVIEW
Critical Challenges in Maritime Engineering
The marine industry faces a unique triad of manufacturing hurdles that traditional supply chains cannot solve — and equipment failure offshore is not just inconvenient, it is a critical operational risk.
- Extreme Corrosion: Components must withstand constant saltwater, humidity, and high pressure.
- Logistical Nightmares: Sourcing spare parts for vessels in international waters can take months, causing costly demurrage.
- Large & Obsolete Parts: Many marine components are massive, and casting molds for older vessels often no longer exist.
Our Additive Manufacturing solutions bridge the gap between port and vessel, transitioning you from physical warehousing to a Digital Inventory.
WHAT WE PRINT
Key Applications for Marine & Offshore
Two distinct production streams engineered for specific vessel needs — from massive structural parts to intricate functional components.
Large-Scale Structural Components
Utilizing Wire Arc Additive Manufacturing (WAAM) to produce massive parts without molds — propellers, rudders, crane hooks, and emergency hull repair patches.
- Propellers & Blades — bronze or stainless steel, mold-free
- Rudder Systems & Stocks — custom heavy-duty steering
- Deck Equipment — crane hooks, winches, structural brackets
- Hull Repair Patches — certified steel plates, rapid delivery
Complex Functional Parts
Laser Powder Bed Fusion for precision components — heat exchangers with lattice structures (40% lighter), monolithic valves, and high-precision impellers.
Legacy Part Revival
Reverse engineering obsolete components for engines and auxiliary systems where original OEMs no longer exist. Scan → Model → Print.
SPECIFICATIONS
Marine-Grade Materials
Metal powders and wires that meet rigorous offshore standards for ductility, tensile strength, and corrosion resistance.
| Material Family | Specific Grade | Marine Application Benefit |
|---|---|---|
| Duplex Stainless Steel | Duplex 2205 / Super Duplex 2507 | 2× strength of standard steel, exceptional pitting & crevice corrosion resistance (PREN > 40). Ideal for subsea manifolds. |
| Austenitic Stainless Steel | 316L / 304L | Industry standard for general marine hardware, excellent intergranular corrosion resistance. |
| Nickel Superalloys | Inconel 625 / 718 | Superior seawater impingement & high-temperature oxidation resistance. Exhaust systems & turbine blades. |
| Copper Alloys | CuNi / Al-Bronze | Naturally resistant to biofouling & seawater corrosion. Essential for cooling pipes & propellers. |
| Titanium Alloys | Ti64 (Grade 5 / Grade 23) | Exceptional strength-to-weight ratio, virtual immunity to saltwater corrosion. Racing yachts & AUVs. |
Traditional Casting vs. Metal 3D Printing
| Feature | Traditional Casting / Forging | Metal 3D Printing (AM) |
|---|---|---|
| Lead Time | Weeks to Months (mold creation required) | Days (print directly from CAD file) |
| Tooling Costs | High (expensive molds & patterns) | Zero (no tooling required) |
| Inventory Strategy | Physical Warehousing (high holding costs) | Digital Inventory (print on demand) |
| Design Flexibility | Limited by draft angles & machining access | Unlimited (topology optimization allowed) |
| Legacy Parts | Difficult / Impossible if supplier is gone | Easy (3D scan → CAD → print) |
Ready to Eliminate Your Supply Chain Bottleneck?
Get a feasibility assessment for your marine component — our engineering team responds within 24 hours.
MANUFACTURING TECHNOLOGIES
The Right Technology for the Right Part
We deploy complementary additive manufacturing processes to cover the full range of part sizes and complexities.
Wire Arc Additive Manufacturing (WAAM)
Best For: Massive parts — 1 meter to >5 meters
Uses an electric arc to melt metal wire layer by layer, achieving high deposition rates at low material cost. Ideal for producing near-net-shape large structures like propellers, structural beams, and hull reinforcement plates.
- High deposition rate for rapid production
- Low material cost vs. powder-based methods
- Near-net-shape: minimal post-machining
Laser Powder Bed Fusion (LPBF / SLM)
Best For: Small to medium, highly complex parts
A high-power laser selectively melts metal powder with extreme precision (±0.05mm). Creates internal cooling channels, lightweight lattice structures, and complex geometries impossible with casting.
- Extreme precision: ±0.05mm tolerances
- Internal channels & lattice structures
- Ideal for topology-optimized parts
WHY CHOOSE US
Proven Results, Trusted Globally
500+
Marine Components Delivered
40%
Average Weight Reduction
5×
Faster Than Traditional
DNV
Certified Process
Solving Industry Pain Points
Decentralized Manufacturing
We print parts at the port closest to your vessel, drastically reducing logistics costs and carbon footprint. No more waiting for shipments from halfway around the world.
Weight Reduction
Topology optimization removes excess material without compromising strength, reducing part weight by up to 40%. This directly improves vessel fuel efficiency and payload capacity.
Obsolescence Management
We extend the lifespan of older vessels by recreating parts no longer available in the market. 3D scan, reconstruct the CAD model, and print a brand-new certified replacement.
CASE STUDIES
Real-World Deployments
See how leading maritime operators have transformed their maintenance and procurement workflows with Met3DP.
North Sea Offshore Platform
Challenge: A critical subsea manifold failed, with the OEM quoting a 12-week lead time for a cast replacement. The platform faced $180K/day in lost production.
Solution: Met3DP printed a Super Duplex 2507 manifold via WAAM in just 5 days, certified by DNV-GL. The part was delivered to the North Sea within 8 days total — saving the operator an estimated $15M in downtime costs.
Global Container Fleet
Digitized 200+ legacy spare parts for a fleet of 45 container vessels. Eliminated $2.3M in physical warehousing costs by switching to a print-on-demand Digital Inventory model.
America’s Cup Racing Yacht
Printed Ti64 structural fittings and custom impellers, achieving 35% weight savings over cast equivalents. LPBF precision enabled complex internal cooling geometries for onboard systems.
END-TO-END SERVICE
From Broken Part to Certified Replacement
We handle the entire workflow — you don’t need a CAD model, a 3D printer, or metallurgy expertise. Our marine engineering team manages every step.
- Reverse Engineering — 3D scan your broken or worn-out part and reconstruct full CAD geometry.
- Material Selection — Our metallurgists recommend the optimal marine-grade alloy for your application.
- Additive Manufacturing — Print using WAAM or LPBF, with full in-process quality monitoring.
- Post-Processing — Heat treatment, CNC machining, and surface finishing to final specifications.
- Certification — Work in accordance with DNV, BV, and Lloyd’s Register guidelines for marine certification.
FAQ
Frequently Asked Questions
Common questions from maritime operators evaluating additive manufacturing for their fleet.
Are 3D printed marine parts certified?
Yes. We work in accordance with guidelines from major classification societies including DNV, Bureau Veritas (BV), and Lloyd’s Register to ensure our printed parts meet the necessary mechanical and chemical properties for marine certification. Each part comes with full material traceability and test documentation.
How does the corrosion resistance compare to casting?
3D printed parts, particularly those made with rapid solidification rates (like SLM/LPBF), often exhibit a finer microstructure than cast parts. This can result in equal or superior corrosion resistance, provided the correct heat treatment and surface finishing are applied. We validate every production batch with standardized corrosion testing.
Can you replace a broken part without a 3D model?
Absolutely. We offer comprehensive reverse engineering services. We 3D scan your broken or worn-out part, reconstruct the geometry into a precise CAD model, optimize it if needed, and print a brand-new replacement. The entire process typically takes 3–7 days depending on part complexity.
What is the maximum part size you can produce?
With our WAAM technology, we can produce parts exceeding 5 meters in length. For LPBF, our largest build volume is 500mm × 500mm × 500mm. For components larger than these dimensions, we can produce segmented parts that are assembled and welded post-production.
How quickly can you deliver a part?
Depending on complexity and size: LPBF parts typically ship in 3–5 business days, while large WAAM parts take 5–10 business days. Emergency expedited services are available — contact us for rush orders. We maintain printing capacity at multiple port-adjacent facilities for rapid deployment.
GET STARTED
Ready to Secure Your Maritime Supply Chain?
Don’t let a missing part keep your vessel in dry dock. Contact our marine engineering team today for a feasibility assessment and quote — we respond within 24 hours.
CONTACT US
Get in Touch with Our Marine Team
Send us your part specifications or CAD files — our engineers will provide a detailed feasibility report and quote within one business day.
Prefer a form? Use the contact form on our main website, or simply email your part drawings, 3D scans, or specifications directly to [email protected] — our team will take it from there.
