"as the check of the capstan falls into the ratchet"
by cm

A capstan is a rotating device on the deck of a ship used to wind a rope or cable around a vertical axis, like a winch.  Capstans were needed to raise large sails and anchors.  Sailors used bars inserted through the top of the capstan to turn the drum.  A ratchet maintained the tension.

Presumably by "check" Mina means the pawl that drops into the ratchet wheel.


Pawl (a) and Ratchet Wheel (b)
Creative Commons Attribution Share AlikePawl (a) and Ratchet Wheel (b) - Credit: Georg Wiora