Met3DP · Marine Additive Manufacturing
Metal 3D Printing Solutions for Marine & Offshore
Revolutionizing maritime supply chains with on-demand additive manufacturing — from digital inventory to the deck of your vessel.
40%
Weight Reduction via Topology Optimization
5m+
Maximum Component Size with WAAM
±0.05mm
Precision with Laser Powder Bed Fusion
Days
Not Months — From CAD to Certified Part
Overview
Critical Challenges in Maritime Engineering
The marine industry faces a unique triad of manufacturing hurdles that traditional supply chains cannot efficiently solve.
From Physical Warehousing to Digital Inventory
In deep sea and offshore sectors, equipment failure is a critical operational risk. Traditional supply chains struggle with remote fleets, aging vessels, and extreme saltwater environments. Our Additive Manufacturing solutions bridge the gap between port and vessel, transitioning you from costly physical warehousing to an agile Digital Inventory.
- Extreme Corrosion: Components must withstand constant saltwater, humidity, and high pressure
- Logistical Nightmares: Spare parts sourcing can take months with costly demurrage
- Obsolete Parts: Casting molds for older vessels often no longer exist
Key Applications
What We Print
Two distinct production streams to address specific vessel needs — from massive structural builds to intricate functional components.
1. Large-Scale Structural Components
Propellers & Blades
Utilizing Wire Arc Additive Manufacturing (WAAM) to print large bronze or stainless steel propellers without the need for molds.
Rudder Systems & Stocks
Custom-manufactured heavy-duty steering components engineered to precise vessel specifications and marine certification standards.
Deck Equipment
High-strength crane hooks, winches, and structural brackets tailored to specific load requirements for marine operations.
2. Complex Functional Parts
Heat Exchangers
Optimized internal lattice structures that increase cooling efficiency while reducing weight by up to 40% compared to conventional designs.
Valves & Pump Housings
Monolithic printing of complex fluid dynamics components to eliminate leakage points found in traditional multi-part assemblies.
Obsolete Spare Parts
Reverse engineering of legacy components for engines and auxiliary systems where original OEMs no longer provide replacement parts.
Specifications
Marine-Grade Materials
Metal powders and wires meeting 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 | Twice the strength of standard steel with exceptional resistance to pitting and crevice corrosion (PREN > 40). Ideal for subsea manifolds. |
| Austenitic Stainless Steel | 316L / 304L | Industry standard for general marine hardware, offering excellent intergranular corrosion resistance. |
| Nickel Superalloys | Inconel 625 / 718 | Superior resistance to seawater impingement and high-temperature oxidation. Used in exhaust systems and turbine blades. |
| Copper Alloys | CuNi / Al-Bronze | Naturally resistant to biofouling and seawater corrosion. Essential for seawater cooling pipes and propellers. |
| Titanium Alloys | Ti64 (Grade 5 / Grade 23) | Exceptional strength-to-weight ratio and virtual immunity to saltwater corrosion. Used for racing yachts and AUVs. |
Our Technologies
The Right Technology for Every Part
We deploy the optimal additive manufacturing process based on part size, complexity, and performance requirements.
Wire Arc Additive Manufacturing (WAAM)
Best For: Massive parts from 1 meter to over 5 meters.
Uses an electric arc to melt metal wire layer by layer. Offers high deposition rate, low material cost, and the ability to produce near-net-shape large structures like propellers and structural beams — without expensive molds or tooling.
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). Capable of creating internal cooling channels, lightweight lattice structures, and complex geometries that are impossible to cast or machine.
Why Choose AM
Traditional Casting vs. Metal 3D Printing
Why leading shipowners and offshore operators are switching to additive manufacturing.
| 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 and patterns) | Zero (No tooling required) |
| Inventory Strategy | Physical Warehousing (High holding costs) | Digital Inventory (Print on demand) |
| Design Flexibility | Limited by draft angles and machining access | Unlimited (Topology optimization allowed) |
| Legacy Parts | Difficult/Impossible if supplier is gone | Easy (Scan and print) |
Our Services
Solving Industry Pain Points
End-to-end additive manufacturing services designed to eliminate downtime, reduce costs, and extend vessel lifespan.
Decentralized Manufacturing
We print parts at the port closest to your vessel, drastically reducing logistics costs and carbon footprint. No more waiting for parts to ship across continents.
Weight Reduction
Topology optimization removes excess material from parts without compromising strength — improving vessel fuel efficiency and reducing operational costs over the component lifecycle.
Obsolescence Management
We extend the lifespan of older vessels by reverse engineering and recreating parts no longer available in the market. From 3D scan to certified replacement.
Case Studies
Trusted by Maritime Leaders
Real results from real operators — see how additive manufacturing transformed their maritime supply chains.
Emergency Propeller Replacement
An offshore supply vessel suffered a propeller blade crack mid-voyage. Using WAAM, we manufactured a certified bronze replacement blade at a nearby port in just 5 days — saving an estimated $280,000 in demurrage costs.
FPSO Heat Exchanger Optimization
We redesigned a critical heat exchanger for a floating production vessel using LPBF with Inconel 625. The topology-optimized part was 38% lighter with 22% improved thermal efficiency — certified by DNV.
Legacy Engine Part Revival
A 25-year-old cargo vessel needed engine auxiliary parts that were discontinued by the OEM. We 3D scanned the worn components, reverse engineered them, and printed Duplex 2205 replacements in 10 days.
What Our Partners Say
“Met3DP’s on-demand printing capability completely transformed our spare parts logistics. We reduced our physical inventory by 60% while actually improving our vessel uptime.”
Fleet Manager, Nordic Offshore AS
“The reverse engineering service saved our aging fleet. Parts that were impossible to source for 10 years were scanned, printed, and certified within two weeks. Outstanding quality.”
Head of Engineering, Pacific Maritime Group
“The topology-optimized heat exchanger Met3DP printed for our FPSO achieved results we didn’t think were possible — 38% lighter and more efficient. DNV certified on the first attempt.”
VP Operations, Atlantic Deepwater Energy
FAQ
Frequently Asked Questions
Common questions about marine metal 3D printing, certification, and our process.
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 all printed parts meet the necessary mechanical and chemical properties for marine certification. Each component undergoes rigorous testing including tensile, fatigue, and corrosion resistance analysis.
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 results in equal or superior corrosion resistance, provided the correct heat treatment and surface finishing are applied. We validate every batch through ASTM G48 pitting corrosion tests.
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 using high-precision laser scanners, reconstruct the geometry into a CAD model, optimize it if desired, and print a brand-new replacement — all within a matter of days.
What is the maximum size part you can print?
Using our Wire Arc Additive Manufacturing (WAAM) systems, we can produce components exceeding 5 meters in length. For LPBF, our largest build chambers accommodate parts up to 600mm × 600mm × 600mm. For parts exceeding these dimensions, we utilize segmented printing with certified joining procedures.
How quickly can you deliver an emergency spare part?
For critical emergency orders, we can have most parts printed, heat treated, machined, and ready to ship within 3–7 business days depending on size and complexity. Our decentralized network means we can activate the nearest facility to your vessel’s location to minimize delivery time.
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.
Contact
Connect With Our Marine Team
Whether you need an emergency spare part or want to explore a long-term digital inventory strategy, our engineers are ready to help.
Met3DP Headquarters
📞 +86 180 5010 6852
📍 No.1 Hezuo Road, Changsha, Hunan, China
What Happens Next?
Our marine AM process is straightforward and transparent:
01 — Feasibility Assessment
Share your part specifications or broken component. Our engineers evaluate material, size, and certification requirements.
02 — Design & Optimization
We prepare the build file, apply topology optimization if beneficial, and select the optimal AM process and material grade.
03 — Print, Test & Certify
The part is printed, heat-treated, machined to spec, tested to classification society standards, and delivered to you.
