Part I - Chapter IV - Service Assembly and Use ToolsInspection and Testing General Instructions
DEPTH CHARGES MARK 6 and MARK 7
PART II
CHAPTER V - INSPECTION AND TESTING GENERAL INSTRUCTIONS

GENERAL INSTRUCTIONS

1. Depth charge components procured by the Bureau of Ordnance are delivered to Naval Mine Depot, Yorktown, Virginia; Naval Ammunition Depot, Hawthorne, Nevada and Naval Ammunition Depot, Crane, Indiana. Material is distributed from these principal sources to activities ashore and afloat.

2. In order to insure that pistol and booster extender parts are in proper working order when issued, certain functional tests, described below, should be performed on each. Other functional tests should be applied only to a certain percentage of each lot issued. A depot inspector's tag should be secured to each of the components. This procedure will insure the parts to be in working order and they may be assembled with other com-ponents, without further test, to make up the complete depth charge. The depot inspec-tion tag should be removed when each component is installed in a depth charge case.

3. The depot should not break down and inspect new material recieived from contrac-tors. Any components which fail to meet the required functional test should be set aside. The responsible contractor should be notified through the cognizant Naval Inspector of Material of the defects found and the number of units involved. Copy to this notification should be forwarded to the Bureau of Ordnance. The contractor supplying the defective material should be given the option of sending his representatives to the depot to cor-rect the faults noted or have the material returned to his plant for reconditioning.