the owner of the ship or another organisation or person, such as the manager, agent or bareboat charterer, who has assumed the responsibility for the operation of the ship from the owner and who, on assuming such responsibility, has agreed to take over the duties and responsibilities imposed on shipowners in accordance with this Agreement, regardless of whether any other organisation or persons fulfil certain of the duties or responsibilities on behalf of the shipowner, isik, kes valdab laeva ja kasutab seda oma nimel ning on kantud vastavasse laevaregistrisse