The crossword solution for the term 'Pair Ketch' is 'MASTS', which refers to the two MASTS of a ketch, a type of sailing vessel. A ketch is a two-masted sailboat with a main mast and a mizzen mast, both of which are used to support the sails. The mizzen mast is usually shorter than the main mast and is located aft of the main mast. The term 'pair ketch' is used to describe a ketch with two MASTS of equal height.