Marine Travelift, Inc.

Arnold Petersen

Norbert W Lenius

Gerald P Lamer

A hatch cover crane having a hydraulically actuated jack assembly for realigning a hatch cover carried by the hatch cover crane with a ship's cargo hold opening. The jack is extended downward onto one of a pair of support rails, over which the hatch cover crane is moved, to raise one end of the hatch cover crane off the rails. While one end of the crane is raised off the rails, an opposite end is freely driven to facilitate alignment of the hatch cover carried by the hatch cover crane with the cargo hold opening.

Growing community of inventors

Sturgeon Bay, WI, United States of America

Arnold Petersen