Our technical choices


The infusion-moulding technique enables us not only to optimize the proportion of resin in the fibreglass (comparable to the pre-impregnated technique), but also to improve the bonding properties of the composite. The isolation of each balsa square by mechanical ties between the inner and outer skins improves the quality and reliability of the structure, and saves weight too. The systematic use of a very high-quality anti-osmotic resin ensures durability for all Lagoon catamarans.

Buoyancy is a guarantee of safety. All Lagoon catamarans comply with CE standards governing the unsinkability of multihull vessels. The fore and aft compartments of each hull are separated from the boat's living accommodation by watertight bulkheads. The density of the materials used and the absence of ballast increase buoyancy. Even after a collision your Lagoon will still be able to sail.


The furniture and interior fittings are designed by engineers working in the Lagoon design office. Advanced CAD software enables our skilled craftsmen to assess new design features in real time. Thus each item of equipment, each piece of furniture is easily installed because the constraints relating to the boat's complex architecture were resolved in the design stage. In the interests of sustainable development, all partitions and furniture panels on Lagoon catamarans are made using Alpi® reconstituted wood.

Also, Lagoon has one of the industry's most modern woodworking shops that makes full use of cutting and finishing by digitally-controlled machinery, computerized identification of components, pre-assembly at an early stage… to ensure the highest quality and consistency.

Mechanical components

Lagoon catamarans under 50' are fitted with sail-drive transmissions installed behind the rudder to optimize propellers efficiency and to simplify handling under power. This means that the engine compartments are located as far as possible from the living quarters but remain perfectly accessible. They are insulated with high-density foam and foam-lined false floors.
Larger models are usually fitted with engines that have conventional, direct-shaft transmissions. Of course, the engine compartments are totally separate, perfectly insulated and as far as possible from the living accommodation.


Lagoon takes particular care when installing pipework for the fresh and seawater systems and grey and black water systems.
Here again, the 3D design software used by Lagoon's design office allows for the perfect integration of the circuits within the general layout of the boat.
The use of materials such as high-pressure PVC tubing, flexible rubber pipes, and stainless steel or plastic valves and connections ensures that the various installations are not adversely affected by the harsh marine environment.

On-board energy supply

Electrical systems
Electrical circuits are one of the most vital aspects of a modern cruising vessel. Lagoon has made every effort to design electrical circuits that combine quality, reliability, ease of access and maintenance, lightness and safety.
Safety is a major consideration so the electrical systems on Lagoon catamarans are installed in strict compliance with CE standards, and even exceed them in certain respects. The quality of the cables, the way in which they are laid and ducted, their systematic coding, and the ease of access to distribution panels are all factors that Lagoon takes into account when fitting electrical systems to ensure the highest possible standard.

For health and safety reasons the conservation of foodstuffs is essential. Lagoon has therefore studied the question of on-board cold storage very carefully. No cruise would be enjoyable without an efficient refrigeration system. Lagoon and Groupe Bénéteau have much experience in this area and this has led them to implement an ideal compromise between a number of factors:
- best possible insulation, given the limited space available,
- lowest possible energy consumption,
- two-speed compressors, depending on the temperature of the compartment concerned,
- system efficiency,
- ease of maintenance,
- choice of widely available brands.

Generating and storing energy
Saving and storing energy on board a cruising sailboat is a classic problem. A pioneer in this field, Lagoon has always been heavily involved in the R&D work of the Groupe Bénéteau, particularly when the Lagoon 420 Hybrid was developed in 2008.

From the flexible solar panels located on bimini awnings to the adjustable supports installed between the dinghy davits, Lagoon remains a leader where R&D in renewable energy is concerned.

Deck gear, rigging

Experience acquired in racing has enabled Lagoon to choose nothing but the best deck gear and rigging: Harken, Lewmar, Z Spars, Sparcraft, Selden, Incidences, etc.

The stresses on the rig of a catamaran are about ten times those of a monohull. This explains why we take so much care in selecting high quality equipment.

The deck plan design, choice of materials and calculation of stresses is a demanding job that is undertaken jointly by our architects, our suppliers and the Lagoon design office. Each item is subject to repeated and rigorous testing to ensure that we select the most reliable, efficient and durable equipment.

These tests are conducted in the marine-mist ageing chamber at the Groupe Bénéteau laboratory, as well as on racing boats at sea.