CHAPTER  4 TM  55-2320-272-14-1 MARINE TRANSPORT 4-1.   General The trucks are transportable by a variety of inland waterway cargo carriers and lighters and by all Section   I.      GENERAL seagoing cargo vessels. Most marine vessels will have lashing/tiedown materials. If shoring is required or the vessel does not have tiedown materials, then the shipping unit must provide these materials. The ship must have suitable tiedown points such as D-rings or chain lashing anchors. When possible, the vehicle should receive the protec- tion of below-deck stowage. In general, good stowage of vehicles means having them placed fore and aft, as close together as practical, with minimum spacing between outer vehicles and the sweatboards. If not shipped on the vehicle, the breakable parts, spare parts, and OEM (on-equipment material) should be protected and properly identified as to location or disposition during shipment. *NOTE* The methods described in this chapter for lifting and securing vehicles are the recom- Section 4-3.   Vehicle   Preparation mended procedures. Other methods of han- dling and stowing may be used, provided they will  ensure  safe  delivery. 4-2.   Safety In addition to the safety precautions in paragraph 1-6 and the cautions, warnings, and notes in this section, the following safety measures will apply for marine   transport. a. The shipping unit will notify the marine vessel if ammunition or explosives are to be trans- ported with the trucks. Compliance with AR 55- 228, paragraph 2-7, is required. b. The trucks and ammunition will be handled and stowed in accordance with the Code of Federal Regulations, Title 49, Transportation, subparts 176.76 and 176.905. The same regulations are also contained in Water Carrier Tariff No. 32 or the current issue of this tariff. c. Fire extinguishers will be readily available during ship loading and unloading. II.   SHIP   LOADING Truck preparations for marine transport include: a. Securing all loose items. b. Emptying fuel tank to one-fourth of its capacity. c. Removing all trash and mud from the trucks. d. Checking for fluid leaks and repairing defects. e. Inspecting engine and brakes, and repairing any  defects. f. Inspecting tiedown provisions, and repairing or replacing any defective or missing provisions or shackles. 4-4.   Loading   Procedures When appropriate (such as RORO vessels), the trucks can be driven or towed onto the vessel. When lifting the trucks, the crane being used must be of adequate capacity. Ship and shore side cranes are usually rated in long tons (LT), 2,240 pounds, and/or metric tons (t), 1000 kilograms. Typical lifting diagrams for the trucks are shown in figures 4-1,4-2, and 4-3. Place the trucks in the position indicated on the stow plan so that sufficient tiedown points are available. Set the parking brake, and put the transmission in neutral. Disconnect the battery. ***WARNING*** Prior to offering the M939- or M939A1-series trucks for transport, check and replace, if necessary, the rear spring pin used for lifting these vehicles. The proper pin is NSN 5315-01- 206-2239. ***WARNING*** Do not use shackles on the M939- and M939A1- series trucks’ front bumpers for lifting. **CAUTION** Ear protection (plugs) must be worn at all times when working in RORO ship holds. 4-5.   Tiedown   Procedures The preferred tiedown pattern is four chains, with a 35,000-pound capacity, crossed and at an angle of thirty degrees for trucks weighing up to 50,000 pounds (fig 4-4). (The M939-, M939A1-, and M939A2- series trucks do not exceed this 50,000-pound GVW limit.) If the vessel is not equipped with lashing/ tiedown materials, the shipping unit must provide them. 4-1