In strong winds, the crew is directed to reduce the number of sails or, alternatively, the amount of each given sail that is presented to the wind by a process called "reefing". To pull the sail up, seamen on the yardarm pull on "reef tackles", attached to "reef cringles", to pull the sail up and secure it with lines, called "reef points". Dana spoke of the hardships of sail handling during high wind and rain or with ice covering the ship and its rigging.