TM-55-2350-215-10-15 M60 Series Transportability Guidance Download

TM 55-2350-215-10-15 Table 6-1. Bill of Materials for Blocking and Tiedown of M60 in Hold of General Cargo Vessel (Fig. 6-2) Item Description Approximate quantity Lumber Douglas-fir, or comparable, straight-grain, free from material defects; Fed Spec MM-L-751c: 4- x 6 in.......................................................................................... 4 linear ft 2- x 12-in ....................................................................................... 80 linear ft 6- x 8-in ......................................................................................... 154 linear ft Nails Common, steel; flathead; bright or cement-coated; table Xl-b, Fed Spec FF-N-105a: 20d ................................................................................................................... 20 40d ................................................................................................................... 116 Wire rope...... 6 x 19, IWRC; improved plow steel; preformed, regular-lay; table X, Fed Spec RR-W- 410a: 60 ft 5/8-in Clamps...... Wire-rope, "U"-bolt clips, single-grip, steel, Crosby heavy-duty, or equal; MIL-STD 16842: 16 5/8-in. Shackles..... Clevis assembly suspension, bolt and nut type, large, FSN 1670-090-5354, or equal (for 4 front and rear towing and tiedown provisions). Table 6-2. Application of Materials for Blocking and Tiedown of M60 in Hold of General Cargo Vessel (Fig. 6-2) Item No. Required Application A 4 Lumber, 2- x 12- x 240-inch. Pre-position on vessel hold floor under vehicle treads; two pieces required under each tread. B 2 Side blocking. Each consists of one piece of 6- x 8- x 240-inch lumber. Locate against vehicle treads; one piece on each side of vehicle. C 2 End blocking. Each consists of one piece of 6- x 8-in. x length-to-suit. Locate on top of item B against vehicle treads. Toenail to item B with four 40d nails at each end. D 4 Backup cleats, 4- x 6- x 12-inch lumber. Locate on top of item B against item C. Toenail to item B with four 40d nails. E 4 Shackles. Secure one shackle to each towing lug (two at front and two at rear end of vehicle). F 4 Wire rope, 5/8-in., in a complete loop. Secure with clamps (item G). Attach to front and rear shackles and padeyes. G 16 Clamps, 5/8-in. Secure to item E in complete loop. H 4 Padeye. Four required on floor of vessel. J as required Bracing, 6- x 8in. x length-to-suit. Brace as required against vehicle blocking, side of vessel, or adjacent cargo blocking to immobilize vehicle and blocking. Secure each end to adjacent bracing or blocking detail by toenailing with four 40d nails. c. Special Design. Seatrain trailer vessels, roll- on/roll-off vessels, landing ships, and attack-cargo vessels are all equipped with patented lashing gear and pre-positioned fittings in the deck. By proper application of four 70,000-lb (31 752 kg) or eight 35,000-lb (15 876 kg) lashing gear to each end, the M60 will not require blocking and bracing. Typical application of patented lashing gear securing M60-series tanks is shown in figure 6-3. 6-5. Barges and Lighters When the vehicle is moved by barge or similar lighterage to or from vessels secured to piers or at a sheltered anchorage, blocking and bracing materials will be required. When the vehicle is moved for extended distances or through rough waters, tiedowns must also be used. 6-6. Landing Ships, Landing Craft, and Amphibious Vehicles When the vehicle is moved for extended distances or through rough waters, blocking and tiedowns must be used. In most cases, the vessels are equipped with turnbuckles with a sheep's foot on one end that fits into a deck cloverleaf; where turnbuckles are not provided, a suitable substitute may be used. 6-7. Lighter Aboard Ship (LASH) a. General. To transport the vehicle by LASH- type ships, securement by blocking and tiedown requirements is essential, as illustrated in figure 6-4. (1) Armored tracked vehicles may arrive at the processing area with access hatches or tank turrets welded shut to prevent pilferage. Since these vehicles are not maneuverable under their 6-4