le 4 ApplicationР本节各条适用于任何能见度的情况。РRules in this Section apply in any condition of visibility.Р第五条了望РRule 5 Look-outР每一船舶应经常用视觉、听觉以及适合当时环境和情况下一切有效的手段保持正规的了望,以便对局面和碰撞危险作出充分的估计。РEvery vessel shall at all times maintain a proper look-out by sight and hearing as well as by all available means appropriate in the prevailing circumstances and conditions so as to make a full appraisal of the situation and of the risk of collision.Р第六条安全航速РRule 6 Safe speedР每一船舶在任何时候应用安全航速行驶,以便能采取适当而有效的避碰行动,并能在适合当时环境和情况的距离以内把船停住。РEvery vessel shall at all times proceed at a safe speed so that she can take proper and effective action to avoid collision and be stopped within a distance appropriate to the prevailing circumstances and conditions.