Designed by ATN and manufactured by CMI, this is the only ascender conceived to operate on marine environment: Manufactured with anodized Aluminum and Stainless Steel, it will not rust.

Its open design allows it to be fitted OVER the taught halyard / synthetic shroud / stay. From 3/8” up to 5/8”.

It allows the sailor to climb the mast alone. It can also be used as a safety, in conjunction with the ATN Mastclimber.