King Marine: The Hidden Secret at the Heart of the Port of Valencia

52 Super Series fleet, King Marine Base, Port of Valencia. (Photo: María Muiña)

1. Valencia-based King Marine is a world leader in the construction of carbon fibre racing yachts.

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3. The company operates two facilities in the Valencia region: a manufacturing plant in Alginet and its operational base at La Marina de Valencia.

The story of King Marine in Valencia began as what was supposed to be a temporary arrangement. It became a strategic decision backed by hard logic.

Ahead of the 2007 America’s Cup, the Spanish Challenge enlisted the services of King Marine. The Cup’s rules require that boats be built in their country of origin, which meant production had to take place in Valencia. The company, then based in Buenos Aires, relocated its team, leased space and got to work. When the regatta ended, it stayed.

“We found an extremely favourable environment,” says Gabriel Mariani, one of the company’s founders. “The financing conditions, the supplier network the America’s Cup left behind, the locally trained workforce, the connectivity to the rest of Europe…” Over time, the Buenos Aires shipyard wound down production and Valencia became the centre of everything.

Today King Marine operates from the former Team New Zealand base at La Marina de Valencia, alongside a 3,800-square-metre manufacturing plant in Alginet.

“Being inside the European Union makes doing business enormously easier,” says Pablo Santarsiero, the CEO who oversees every detail of King Marine’s industrial and commercial operations. “The vast majority of our materials and services suppliers are European. And direct access to the sea is priceless for what we do.”

King Marine builds racing yachts for the most demanding clients on the planet — campaigns competing in events like The Ocean Race and the 52 Super Series. Many of its clients come from major sailing nations — the United States, Italy, the United Kingdom, Germany — choosing to develop their projects in Valencia despite the physical distance.

But King Marine is far more than a shipyard. It is, in Santarsiero’s own words, “a company that processes composite materials at a very high technological level, focused on prototype production.”

The Value of Carbon Fibre

Carbon fibre is the foundation of the company’s success. Five times stronger than steel, it neither rusts nor expands under heat, and it can be engineered and moulded so that its structural properties are precisely matched to the demands of each project. What sets King Marine apart, however, is not simply working with carbon fibre — it is the freedom and depth with which the company does so, which few industries allow.

“In racing yachts, especially in an America’s Cup campaign, the only regulation that applies is the event’s own class rules,” explains Santarsiero. “There is no external body certifying the structural integrity of the boat. That frees both designer and builder to experiment without limits.” The absence of external regulation — which in another context might sound like a liability — is precisely the source of King Marine’s differential knowledge. While commercial aviation advances slowly under the weight of regulatory constraints, elite sailing moves at a far greater pace.

From Shipyard to Innovation Laboratory

 

King Marine’s R&D capabilities now position it to engage with sectors such as defence and aerospace, and the company is actively working on projects that few firms in the Valencian Community — or in Spain — are equipped to tackle.

Its first major success outside of sailing came through King Agro — an idea that sounds like science fiction when spoken aloud: manufacturing carbon fibre spray booms for agricultural crop dusters. A fifty-metre boom that paid for itself five times over in a single working season. In 2018, John Deere, the global agricultural giant, acquired King Agro and all its subsidiaries in Spain and Argentina. It was the ultimate validation.

Today, King Marine manufactures composite radomes — rigid structures transparent to radio frequencies — for defence programmes, including the radar system housings for submarines, built to withstand hundreds of metres of pressure without losing a millimetre of precision. It develops hemispherical structures for neutron reflectors in scientific projects where the margin for error is zero. And it participates in the TANK2ZERO programme — funded by CDTI with European Union backing — to develop cryogenic liquid hydrogen storage tanks made entirely from carbon fibre, for use in zero-emission aviation.

“Carbon has a unique property that makes it ideal for these projects,” explains Santarsiero. “The fibre itself does not expand under heat, unlike every other material. That makes it perfect for applications where dimensional stability under extreme conditions is critical — satellites, neutron reflectors. We have the ability to design highly specific laminates for highly specific applications.”

Santarsiero is reshaping the business model of a well-established company, and now wants to expand its territory. “The yacht-building side is well positioned, and we have no intention of growing it significantly in volume,” he says. “The real opportunity to scale and generate more business is in defence, space and science. Those are the sectors where we fit best — where our differentiation is not price but the quality and complexity of what we are capable of producing.”

Pablo Santarsiero, King Marine´s Chief Executive Officer. (Photo: María Muiña)

The philosophy is clear: in a world where European labour cannot compete on price with Asia, the bet is on doing what no one else can — pieces of maximum technical complexity. Prototypes that engineers in other industries did not know were possible until King Marine showed them. A laboratory at the heart of La Marina de Valencia working with the same fibre used to build rockets, satellites and the fastest racing yachts on the planet.

“Our organisation is very flexible, and that has been one of the keys to surviving twenty years,” reflects Santarsiero. “We adapt to every situation. We know where projects begin. We don’t always know where they end. And that, far from frightening us, is what keeps us sharp.”