1航海1．1被保险船舶在任何时候按本保险的各项规定承保，允许在有或没有引航员的情况下开航或航行，试航，和协助、拖带遇难船只，但保证被保险船舶不得被他船拖带，除非是习惯性的或需要协助拖至第一个安全港口或地点，也不得根据被保险人、船东、船舶管理人和／或承租人事先 1 Navigation 1.1 The insured vessel is covered at all times under the provisions of this insurance by permitting sailing or sailing, pilotage and assistance with or without pilot to tow the vessel in distress but with the assurance that the insured vessel shall not be He shall not drag the ship unless it is customary or requires assistance to tow to the first secure port or place, nor shall it be based on the prior notice of the insured, the owner, the ship manager and / or the charterer