Follow orders
奉命登船的人

Survival was legitimate if you had been ordered by an Officer to get into a lifeboat.
如果收到指令，奉命登上救生船是被允许的。

It was unclear to the passengers who had the authority to issue such an order. Ismay was apparently ordering passengers of both sexes into the lifeboats, but as no one knew who he was, they ignored him.
乘客们并不清楚谁有这样的权力去指定别人上船。Ismay显然是让所有的人都上船，但是，由于大家都不认得他，谁也没把他当回事。