On the failure of the circumferential claw bolts of the first reduction gear wheel in the double reduction gear of the S. S. “Hakozaki maru”

Abstract

The anther first describes the failure of the circumferential claw bolts which occured one after another during the voyage and the procedures he took as the first engineer of the S. S. “Hakozaki maru”. Next he explains the material tests of the bolts and the investigations of the failure which were done by Mitsubishi Zosen kaisha Ltd.
Finally, he adds his own opinions about the failure of the bolts from the standpoint of a sea-going engineer.