For boats weighting less than 3000kg. The boat aperture is 2700mm to 3300mm wide. This rack is designed for outside storage The Nautirack structures ware disigned and calculated to resist to forklift-handling and boat-storage.All the elastoplastical calculation was done according to the european legislation (FEM 10.2.02). In addition to these static analyses, studies in dynamic stresses were undertaken by integrating the climatic and seismic loads (wind in gust, traileffect,%u2026). These calculations allow obtaining a Nautirack structure in complete conformity with the normative requirements EUROCODE 1 and Paraseismic Rules. The conformity and structural design of the Nautirack was the subject of a certification of Office VERITAS. These results in addition to the existing installations are a guarantee of safety and conformity for the owners, the local communities and the insurance companies