This is the 17328th most frequent Korean word.
선박들
Ships.
Here, '선박들' refers to multiple ships performing the action of unloading cargo.
선박들은 항구에서 화물을 내리고 있다.
The ships are unloading cargo at the harbor.
In this sentence, '선박들' indicates ships that operate at night with their lights on.
선박들은 밤에 항해등을 켜고 항해한다.
The ships turn on navigational lights at night and sail.
'선박들' is used here to describe multiple ships whose conditions were inspected.