Stinis Autotwist spreaders are a modified version of the semi-automatic spreader, and were introduced in 1989. Ever since, the Autotwist spreader has proven to be extremely successful for container handling on conventional ships, luffing harbour cranes and shipboard cranes. They are also used under mobile harbour cranes, and as spare (back-up) spreaders.
Like its predecessor, the Autotwist spreader can handle 10ft, 20ft, 40ft & 45ft containers and is meant to be used on the same type of vessels. The Stinis Autotwist spreader, however, is unique because of its gravity level locking principle. The gravity level – red colored for easy recognition – causes the twistlocks to lock and unlock automatically, and allows the operator to see clearly whether the (un-)locking action has been completed correctly. Advantageous is that this mechanically operated spreader does not require electric wiring.