IntroductionThis document provides guidelines for linear pulling on
mooring cleats for vessels up to 24 meters, in accordance with EN ISO 15081:2018. It includes specifications, procedures, and recommendations based on a mathematical model (FEM) for various vessel sizes.
SpecificationsThe document outlines vessel lengths in both feet and meters, ranging from 30 to 80 feet (9 to 24 meters). It provides calculated lengths and displacement masses for different vessel sizes.
ProceduresCalculations are based on the perfect application on the deck, with the line passing through a shock absorber and acting on the
cleat longitudinally. The document specifies conditions for horizontal shots at the anchor point, shots far from the cleat, and shots on the stern under different Beaufort Force conditions.
Norms and StandardsThe calculations adhere to EN ISO 15081:2018, considering various wave heights and forces. Maximum allowed linear stress is specified as 40 kN.
Models and CodesThe document lists several models with their respective codes, such as JOY 80 kg (B6A248H) and JOY 500 kg (B8A245H).
RecommendationsDespite following important rules and reasoning, the document notes that the norm does not fully account for the real effort and variability of tensile forces and their directions, which are difficult to calculate. However, based on over four years of installation experience, models like JOY 300 kg B2A243H and JOY 100 kg B1A241H have been successfully installed on 70 and 60 feet sailboats, respectively, without damage.
ConclusionThe document emphasizes the importance of adhering to the guidelines while acknowledging the challenges in calculating tensile forces accurately. It highlights the reliability of certain models based on practical experience.