RULE 102. The Stevedoring Companies shall be responsible for the proper and safe condition of all stevedoring gear supplied by them, and for the competency of Foremen and other persons employed by them in charge of operations. Stevedoring gear shall be carefully inspected in accordance with the appropriate regulations by a designated and competent employee before being issued for use. Any unsafe or doubtful gear shall be discarded or marked, and so placed that it cannot be used by employees.