A multidisciplinary team of architects and engineers


Jean-François Ansquer


Co-founder and manager of the company, the naval architect specialist of the studies, leads the business and animates the company. He also takes care of special transactions.


Aurélie Kérivel

Executive assistant

In charge of the administrative and accounts management of the company, Aurélie joined the team in 2018. She works in support of commercial operations and communication.


Laurent Lelarge

Research officer

In charge of quality assurance and Coprexma's compliance with the ISO 9001 standard, Laurent joined the company in 2004 after engineering studies at Ensta Bretagne.

gris mauve

Mathieu Le Gall

Research officer

A specialist in vessel stability, Mathieu is also in charge of supplies. The holder of a degree in innovation and development, he joined the company in 2010 after initial experience in the field of fire protection.


Yves Le Perron

Project manager

A specialist in structures and regulatory oversight, Yves is a graduate engineer of ESSTIN in Nancy. He joined the company at the end of his studies in 1999.

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Our technical resources


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Our strength

01 Optimised design

Wood, steel, composite or aluminium, the naval design and architecture firm COPREXMA is the undisputed leader in the design of fishing vessels, but also works with shipyards on the design of passenger vessels, service launches and all types of professional vessels. The focus of our work: optimised design of hulls and a constant search for the most appropriate solutions for the integration of equipment and gear essential to professional boats.

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02 Innovations

KatEL, NØé: these two forenames are not those of new-borns but of innovative projects arising from the imagination and expertise of Coprexma's team. They are passenger vessels, an all-electric catamaran and a ferry powered by a fuel cell.


Our know-how


From the idea to the search for the shipbuilder, together with you, we define the project to fulfil your requirements.

– Preliminary project
– Preliminary design
– General Arrangement Plans
– Definition of the specifications
– Technical specifications
– Shipyard tender document

Naval architecture

We create the design and produce the plans for the design and construction of your vessel.

Design plans: overall, lines
– General arrangements
– Dimensions of installations
– Construction plans: structure and flow of structural elements
– Installation of equipment
– Location of propulsion assemblies – Location of special equipment: rudder, fitting out, piping
– Detailed plans

Studies and designs

Our expertise and our high-performance software enable us to produce complete studies for the design of the vessel, its stability and its safety.

Calculations of speed and propulsive power

– Scantling and structural calculations
– Weight estimates
– Load cases
– Verification of applicable criteria
– Special instructions and orders
– Hydrostatic weighing
– Stability experiments

Assistance and Follow-up

Our experience and knowledge of regulations and procedures enables us to advise you and support you at each stage.

Approval and safety file: safety plan (rescue, fire-fighting, etc.)
– Freeboard report Approval file for the flag maritime authority and the classification society
– File for the regional and central vessel safety commissions
– Technical assistance and build monitoring: specifications, control scheduling, construction monitoring, technical compliance monitoring, tests at the quayside and at sea, acceptance

A project ?

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Aim high!

Sep 14, 2021 / by admin / In Actualités / Comments Off on Aim high!

More space, more comfort

Apr 14, 2021 / by admin / In Actualités / Comments Off on More space, more comfort

New sardine venture for Saint-Gilles Croix de Vie

May 29, 2019 / by admin / In Actualités / Comments Off on New sardine venture for Saint-Gilles Croix de Vie


Thank you for contacting us. We will answer you as soon as possible.

Thank you for contacting us. We will answer you as soon as possible.

Address :

2 rue du Menhir, ZA du Guirric,
29120 Pont-L’Abbé, France

Phone :

(+33) 298 824 771

Fax :

(+33) 298 824 790

Mail :


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