#8 Think he is referring to the practice of oil tankers when on a berth. Where it Was usually the practice of the port to have a wire hanging from each end of the ship as an emergency wire for tugs to pick up to pull you clear of the berth in event of a fire on board . JS. This other than a wire could be a mooring rope. Every ship carried a proper tow line commonly known as the insurance wire , this would only be used for a properly organised deep sea tow and would take seamen who knew what they were doing to rig , we used to use it also to make a lee for barges when loading sugar off barges in Cuba. JS
For those who have never made a lee for the likes of barges it entailed a lot of beef and heavy work using the tow wire ( insurance wire) usually stowed under the focsle , had to be dragged all the way aft pass through one of the quarter leads and lead all the way back forward and shackled on to the anchor cable you had out.The end passing through the quarter lead would then be turned upon the bitts. To make a lee you would then put the windlass in gear and walk the anchor out further and the wire would pull your stern across the wind and tide to the required angle. After work finished for the day just heave your anchor back to its original position and ship rode naturally to wind and tide. I wouldn’t like to do it today with the reduced.manpower on board . JS