NOTEBOOK OF A SINGLE NAUTICAL EYE: piece that is part of the rigging to drive a boat, through which ropes are passed with which the direction of the ship is modified or the berthing, anchoring or setting sail of the same is carried out. A notebook, derived from notebook, in nautical, is a group of two or more pulleys placed in parallel and jointly, which have the same central axis. Pulleys may have one or two eyes, through which ropes are passed.
