About us and our technology
Passion for Performance – Since 1983
It all started in 1983. Göran Marström, Olympic bronze medalist in sailing from the 1980 Moscow Games, wasn’t satisfied with the boats he competed in.
Inspired by aerospace engineering at SAAB in Linköping and the production of the JA 37 Viggen fighter jet, he installed an autoclave with one goal in mind: to build the fastest Tornado catamaran on the market.
The investment paid off. From 1988 to 2008, boats built by Göran and Pär Wärn dominated the Olympic scene – to the point of creating a near monopoly.
But the secret wasn’t just speed.
Their boats lasted – season after season, year after year – even under the most demanding professional conditions. That same philosophy guides us today: high-quality composites don’t degrade mechanically over their lifetime. They’re not only lightweight and strong – they’re also durable and dependable. We call it “life cycle thinking,” and it’s embedded in everything we do.
From Olympic Podiums to Global Innovation
In 1992, we expanded into mast production. With components like masts, rudders, and daggerboards for classes such as the E-dinghy, the Marstrom name spread far beyond the Tornado scene. When we developed the VX40 catamaran for inshore racing ahead of the Volvo Ocean Race in 2005, the idea of a lightweight, fuel-efficient RIB for race team support was born. The result? A faster, more agile, and more efficient hull – the foundation for our ongoing collaboration with Dutch boatbuilder Xtender.
Investing for the Future
Today, Marstrom Composite is on the rise. As part of a growing industrial group, we are investing boldly in technology, capacity, and people:
- New 5-axis CNC milling machines and large-format 3D printer
- Multiple high-capacity autoclaves up to 35 meters long
- Modern paint booths, trimming, and assembly facilities
- A growing team across five additional composite-focused companies in the group
We’re scaling up to meet the future – with the same precision, quality mindset, and passion for performance that built our legacy.
High-Tech Composites Across Industries
While our heart remains in the marine world, we’ve since taken our composite expertise into aerospace and industry. Chances are, you’ve flown on a Boeing or Airbus equipped with cargo systems made right here in Västervik.
Today, we engineer and manufacture a wide range of composite components – from precision tables used in proton therapy for cancer treatment, to loudspeaker enclosures, turret systems, and wind turbine blades.
Certified Quality, Trusted Partners
We are ISO 9001 certified and operate under a strict quality assurance system. Our production is traceable, drawing on a legacy of craftsmanship while meeting the most exacting specifications. Our customers include BAE Systems, SAAB and Volvo – companies that trust us with their most critical components.
Composite Manufacturing – The right method for every need
At Marstrom Composite, we offer a range of manufacturing techniques to match the performance, scale, and cost requirements of each project. Our strength lies in understanding which method is right – and executing it with precision.
Pre-preg Autoclave Curing
High-performance and ideal for series production
This is our core method, offering unmatched strength, precision, and repeatability. Widely used in aerospace, pre-preg combined with autoclave curing delivers the best possible weight-to-strength ratio and minimal defects.
Vacuum Infusion
Strong and reliable – ideal for larger applications
A cost-efficient technique where dry fibers are placed in a mold and resin is drawn in under vacuum. Suitable for large components where structural integrity is important but ultra-high performance is not essential.
RTM (Resin Transfer Moulding)
Exceptional surface finish – ideal for high-volume production
In RTM, resin is injected into a closed mold under pressure. The result is consistent, repeatable parts with excellent surface quality, suitable for large production runs with aesthetic or aerodynamic demands.
Hand Lay-up (Wet Lamination)
Best suited for simple prototypes or non-structural parts
This traditional method involves manually applying resin to fiber layers. It’s useful for quick, low-cost prototyping or parts without high structural demands.
Material Performance at a Glance
At Marstrom Composites, our technology is built on the fundamental advantages of advanced carbon fiber. Compared to traditional materials such as steel, aluminum, and fiberglass, carbon fiber offers a unique combination of extreme stiffness, exceptional tensile strength, and remarkably low density. These properties enable lighter, stronger and more efficient structures—perfectly aligned with our commitment to innovation, precision engineering, and performance without compromise.
The graphs below illustrate how carbon fiber outperforms conventional materials across key mechanical metrics, and why it remains the core of our technical leadership.
Specific stiffness (UD laminate)
Specific stiffness of UD laminates: carbon fiber delivers unmatched rigidity-to-weight performance compared to aluminum, steel and glass fiber.
Specific tensile strength (UD laminate)
Illustrates the superior specific tensile strength of carbon fiber versus traditional engineering materials.
Density
Compares material density, highlighting carbon fiber’s low weight relative to metals and fiberglass.
Sponsorship & Community Engagement
At Marstrom Composite, we believe in contributing to the communities where we live, work, and innovate. As a company grounded in precision engineering and world-class composite craftsmanship, we support initiatives that reflect dedication, resilience, and long-term development — both locally and beyond.
Our Focus
We primarily support organisations and projects connected to initiatives that encourage innovation, craftsmanship or technical curiosity.
Local Partnerships
Marstrom has a long tradition of collaborating with local organizations and universities. Through our sponsorships, we aim to give the people the opportunity to grow, compete, and be part of strong and healthy communities.
How to Apply for Sponsorship
If your organisation is interested in partnering with Marstrom Composite, you are welcome to contact us at info@marstrom.com.
Applications are reviewed once per year by our management team.
To be considered, organisations should:
- run an active and credible programme
- offer relevant visibility or partnership value in return
We look forward to supporting initiatives that make a real and lasting impact.
Our specialist operations
– part of the whole
At Marstrom Composite, several specialist operations are brought together to enable our complete offering
– from mould to finished product. Our operations also include:
JPC Composite
Delivers technologically advanced composites for a broad portfolio of customers in marine, industrial, aerospace and defence – with a focus on quality, flexibility and scalability.
Composite Design
Specializing in the development and production of composite components for both civil and defense-related applications – in marine, industry, aerospace and defence.
ID Modeller
Manufactures advanced moulds and tools using 3- and 5-axis machines for all types of applications – with round-the-clock production and the highest precision.
Carbonia Composites
Delivers technologically advanced composites using Resin Transfer Molding (RTM) for a rational and cost-effective serial production of high-performance composite components.
You are in good company
