This is the 1312th most frequent Dutch word.
lichten
"To lift" or "to illuminate."
Here, the word 'lichten' refers to 'lights,' indicating illumination.
Aan boord rommelden mannen met lichten.
Men were rummaging with lights on board.
In this case, 'lichten' means 'to lift,' specifically in the context of raising an anchor.
Ze moesten het anker lichten voordat ze konden vertrekken.
They had to lift the anchor before they could leave.
Here, 'lichten' represents 'lights,' showing its use to indicate the lamps on the vehicle.