Floating wind has reached a stage of development of solutions, therefore in order to install structures for more than 50 years of design life and low maintenance, the design process is critical, as it is the station keeping system, among other key components. design strategies are part of the process to obtain safe structures without compromising the environment and total costs. hence the design must be the most optimal version for each specific site and offshore conditions. the research undertaken in this thesis has the aim of providing open tools for the design and optimization of offshore mooring systems for floating wind turbines (fowt) towards lowering total lcoe costs. a reference wind turbine has been considered to optimize its station keeping system and prove the feasible cost reductions for future real projects.floating wind has reached a stage of development of solutions, therefore in order to install structures for more than 50 years of design life and low maintenance, the design process is critical, as it is the station keeping system, among other key components. design strategies are part of the process to obtain safe structures without compromising the environment and total costs. hence the design must be the most optimal version for each specific site and offshore conditions. the research undertaken in this thesis has the aim of providing open tools for the design and optimization of offshore mooring systems for floating wind turbines (fowt) towards lowering total lcoe costs. a reference wind turbine has been considered to optimize its station keeping system and prove the feasible cost reductions for future real projects.