You reach out with your magic to furl, unfurl, or otherwise manipulate one sail, stretch of rigging, or other movable ship component you can see within range.  If your last short or long rest was spent on a ship other than the ship the target is part of, you must make a DC 15 ability check with your spellcasting ability.  If you fail, the spell fails and the action is wasted. 

At Higher Levels.  You can choose more than one target when you reach higher levels: two at 5th level, three at 11th level, and four at 17th level.