Roll-on/Roll-off (RORO) Seatrain, Landing, and Attack Cargo Ships

25 August 1988

TM 55-2320-280-14

Table 6-2. Application of Materials for Blocking and Tiedown of HMMWV (Fig. 6-1) - Continued

No.

Item

Required

Application

C ........

4 Backup cleats. Each consists of 4- x 4- x 12-inch lumber. Locate on top of item

A with one end against each item B. Nail to item A with four 20d nails each.

D* .......

4 Tiedowns. Each consists of one piece of 3/8-inch, 6 x 19, IWRC wire rope,

length as required (about 15 feet). Form a complete loop through each truck

shackle and the eye of a turnbuckle, item F. Overlap wire rope ends at least

18 inches. Optimum tiedown angles are 45 degrees.

E ........

24 Clamps. Place four on each wire at overlap area. Space 2-1/2 inches apart,

with a minimum of 6 inches from ends of wire rope. Place one at each place

where rope passes through a shackle or turnbuckle. Details for placement of

clamps are shown in figure 6-2. Tighten clamps so wire rope cannot slip.

F.........

4 Turnbuckles. Attach jaw end to padeye, stanchion, or bulkhead. Tighten as re-

quired.

G ........

8 Thimbles. Place one under wire rope at each place where rope passes through a

shackle or turnbuckle. Secure each 3/8-inch thimble to wire rope with one

3/8-inch clamp.

6-5. Roll-on/Roll-off (RORO) Seatrain, Landing, and Attack Cargo Ships

NOTE

When HMMWVs are loaded on vessels that are adequately ventilated by power blowers, such

as RORO vessels, fuel tanks may remain undrained and battery terminals may remain con-

nected.

a. Loading. The HMMWVs can be loaded under their own power or towed aboard RORO vessels.

b. Securing. RORO, seatrain, landing, and attack cargo ships are equipped with patented lashing gear and

pre-positioned fittings in the deck. The use of such equipment and blocking and bracing is not required. Figure

6-3 shows typical tiedown of HMMWVs on a RORO vessel using 10,000-pound-capacity lashings.

Figure 6-3. Typical tiedown of HMMWV on RORO ship.

6-4