Linssen Steel Assembly. Top quality starts with the basics.

However, Linssen Yachts has always looked on these developments in a professional manner and have even taken it as a compliment – after all “imitation is the most sincere form of flattery”! Whatever the case may be, Linssen owners are guaranteed that they are spending their leisure time on board an original. And that’s a good feeling…

When we talk about quality, hull construction is also a determining factor. Over the years Linssen has accumulated a lot of know-how in this area. At Linssen Yachts hull construction is therefore a highly professional process. It starts with the design stage in which the designer is not just looking at the aesthetics but is considering from the outset the construction aspect and what is and what is not technically feasible. The engineering then follows in which construction, technology and design are coordinated by means of special computer programs. All the details are fully worked out digitally before the data is sent to the hull construction department. There, all the components are cut out with great precision by CNC laser cutters and coded.

The construction is characterised by a balanced combination of longitudinal and transverse connections on the bottom (web frames, frames, bulkheads and stringers), which – made possible by CAD/CAM and CNC laser cutting – go half in/over each other at the crossing points (known as “notching”). This makes the construction really sturdy and coating-friendly, i.e. it has good anti-corrosion properties.

The engine bed is an extension of the longitudinal stringers that run from stern to bow. These stringers are crossed by two web frames positioned athwartships and the four mounting points of the engine(s) are superimposed exactly on the four crossing points (Linssen Dual Cross engine bed). This immediately also lays the foundations for the low-vibration and low-noise characteristics of each Linssen Grand Sturdy.
Much use is made of folding work in a Linssen hull. Folding work involves the bending of sheet steel components into different radiuses, which creates a taut radius, providing a smooth surface for painting. What’s more, every fold is one welded seam less, the result of which is less contraction, tauter hulls, less filling work and therefore an even better finish.

The construction of the Linssen hull has been developed in-house by Linssen Yachts and is based on the Linssen FBFS (Fixed Bottom Flex Sides) system. In principle, this means that the bottom is constructed around the engine bed and the keel. The shell is reinforced by a combination of longitudinal and cross bracing so that it remains extremely taut during construction and a minimum of filling work is required at the coating stage.

All floor beams consist of square and rectangular hollow steel sections. This has major benefits as it creates a maximum of rigidity and the entire structure is self-supporting. This means that no supports are needed to the bottom and so any vibration is not mechanically transmitted from the bottom to the floor. In most other steel boats, however, this type of floor support is actually necessary.

In addition, there is a certain amount of residual flexibility in the construction as a whole, which once again has a noise-reducing effect. The tubular steel construction is easily preserved, which means no inaccessible points that require painting (which would be the case, for example, with angle sections) are left in the construction which could then lead to corrosion. The construction has been chosen so that the FIS system (Floor Integrated System) can be incorporated into it.

In the design and finish of the superstructure, attention is expressly focused on ensuring that it has a coating-friendly and therefore maintenance-friendly exterior. Careful consideration is given to the choice of materials, drainage systems, rounded angles, deformations (folding, bending) and the positioning of components.

The base of the windscreen is made entirely of stainless steel but is blasted and preserved along with the rest to provide optimum protection. Even the swimming platform is made of stainless steel. Typical examples of concealed Linssen quality.