Ratlines

Climbing the ratlines of STS Mir
Rat-boards and rigging of Christian Radich

Ratlines (/ˈrætlɪnz/) are lengths of thin line tied between the shrouds of a sailing ship to form a ladder.[1] Found on all square-rigged ships, whose crews must go aloft to stow the square sails, they also appear on larger fore-and-aft rigged vessels to aid in repairs aloft or conduct a lookout from above.

  1. ^ "The Free Dictionary: Ratlines". Retrieved 2013-08-29.