The MASTCLIMBER is simple to use, its set up time is minimal, and its rugged and simple construction will ensure years of use, allowing you to maintain and check aloft all the standing rigging of your sailboat.

The MASTCLIMBER is a great system as it uses the leg muscles to climb, allowing you to reach the mast head not exhausted by the climb, and since it rides onto a static line, taut between the deck and the mast head, it prevents you from swaying away from the mast, helplessly, even if the boat heels over.

The MASTCLIMBER consists of 2 parts, a bos'n's chair with back rest and one-way jammer, and leg straps, with loops for the feet, with one-way jammer.

Operation of the MASTCLIMBER is done by alternatively standing up on the leg straps, which allows you to slide up the one-way jammer of the bos'n's chair, then sitting onto the bos'n's chair, which allows you to slide up the one-way jammer of the leg strap, then standing up on the leg straps. To descend the mast, procedure is reversed.

The Mastclimber will fit OVER any rope halyard, from 3/8” up to 5/8”.

“See the article in the May 2003 issue of Sailing World by Emma Richard, one of the competitors of Around Alone, going aloft to repair her main halyard , at sea, for 4 hours with the ATN Mastclimber”