TM 55-607/NAVSEA OP 3221 Rev 2
1-1. Purpose and Scope
This manual provides an operational reference guide for loading military munitions and explosives aboard breakbulk
merchant ships. Only breakbulk stowage methods are discussed. Container loading procedures are described by
specific outloading drawings prepared by the Services. The text provides general guidance for military and civilian
personnel engaged in loading, blocking, and bracing military explosives cargo for ocean movement by ships in
conformance with the Code of Federal Regulations (CFR), Title 46, Part 146 (46 CFR146).
1-2. Report of Publication Improvements
Users of this publication are encouraged to recommend changes and submit comments for its improvement. Comments
should be keyed to the specific page, paragraph, and line of the text in which the change is recommended. Reasons will
be provided for each comment, to ensure understanding and complete evaluation. Comments should be prepared on DA
Form 2028 (Recommended Changes to Publications and Blank Forms) or in a letter and forwarded to the Commander,
Military Traffic Management Command, ATTN: MT-SA, 5611 Columbia Pike, Falls Church, VA 22041-5050, or the
Commander, Naval Weapons Station Earle, ATTN: Naval Weapons Handling Laboratory, Colts Neck, New Jersey
07722. All proposed changes will be evaluated and approved by both commands.
1-3. Application and Intended Use
The information in this publication is intended for personnel, at shiploading activities, who are concerned with loading and
shoring military explosives onboard merchant ships. Particular emphasis is placed on dunnaging, with text and
illustrations directed to the requirements of blockers and bracers. Additional information concerning associated
functions, such as cargo planning, equipment and material scheduling, inspection, and labor requirements, is sufficiently
detailed to describe the complete environment of shiploading and cargo stowage. When used in conjunction with
applicable Federal and military regulations, this manual will provide ammunition terminals with a synopsis of user-tested
procedures for the safe securing of breakbulk ammunition and explosives. Shiploading drawings, as listed in the
Department of the Army Pamphlet 310-24, are available for the stowage and shoring of US Army guided missile and
large rocket components in accordance with approved methods and procedures. References are contained in appendix
1-4. Compliance With Federal Regulations
Procedures in this manual comply with requirements established in 46CFR146-29. These regulations prescribe the
responsibilities of shippers and carriers of military explosives and hazardous materials and provide for their enforcement.
Figure 1-1 shows
a typical merchant ship being loaded with military ammunition and explosives.
1-5. Compliance by Navy Activities
Navy activities are required by OPNAV 8023.22A to comply with OP 3221/TM 55-607.