DESCRIPTION
DESCRIPTION
The ATN Mast Ascender is the only rope ascender engineered specifically for marine use. Designed by ATN and manufactured by CMI, it lets you climb your mast under your own power, and doubles as a safety backup when used alongside the ATN Mastclimber.
Its open design drops straight onto a tensioned halyard, synthetic shroud or stay, so there is no need to thread a line end through the body. Built entirely from stainless steel, it resists corrosion in the marine environment and grips line from 3/8" to 5/8" in diameter. Note that the shackle ear must be tightened from the left side for the ascender to function correctly.
Our Part # ATN-ASCENDER
FEATURES
FEATURES
- The only ascender engineered for marine use
- Open design installs over a tensioned halyard, synthetic shroud or stay
- Stainless steel construction resists corrosion
- Fits line from 3/8" to 5/8" in diameter
- Climb the mast single handed
- Doubles as a safety backup with the ATN Mastclimber
- Designed by ATN, manufactured by CMI
TECHNICAL INFORMATION
TECHNICAL INFORMATION
| Description | Imperial | Metric |
|---|---|---|
| Line Diameter | 3/8" - 5/8" | 9.5 - 15.9 mm |
| Material | Stainless Steel | Stainless Steel |
| Sold As | Single | Single |

