“At All Times”在look-out(了望)和safe-speed(安全航速)中的译文区别

1972年国际避碰规则第五条look-out为“Every vessel shall at all times maintain a proper look-out by sight and hearing as well as all available means appropriate in the travailing circumstances and conditions so as to make a full appraisal of the situation．”。译文内容为：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确的了望，以便对局面和碰撞危险作出充分的估计。