"Lighting the pipe at the binnacle lamp"

A ship's binnacle stands on-deck, traditionally holding navigational instruments such as compasses steady against the motion of the waves as well as ensuring they are well-lit, allowing measurements to be taken at any time of the day or night. 

Ship's wheel and compass binnacle
Creative Commons Attribution Share AlikeShip's wheel and compass binnacle - Credit: Ian Petticrew