Table 6-4. Application of Materials for Blocking and Tiedown of Semitrailer, M747, in General-Cargo Vessel (Fig 6-4)

TM 55-2320-258-14

Table 6-4. Application of Materials for Blocking and Tiedown of

Semitrailer, M747, in General-Cargo Vessel (Fig 6-4)

Application

No. required

Item

Lumber 2- X 12- X 192-in. Pre-position on vessel deck so that

two pieces are under wheels on each side.

Side blocks. Each to consist of one piece of 6- X 8- X 232-in.

lumber. Locate one piece on each side, against and centered on

trailer wheels.

End blocks. Each to consist of one piece of 6- X 8- X 120-in.

lumber. Locate on top of item B, one against rear of rear wheels

and one against front of forward wheels. Toenail to item B with

four 40d nails at each end of each item C.

Backup cleat. Each to consist of one piece of 4- X 6- X 12-in.

lumber. Locate on top of item B against the joint of each item

C. Nail to item B with four 40d nails each.

Wire rope, approximately 20 ft. Form a complete loop

through each tiedown provision shackle and appropriate vessel

deck padeye. Pull wire rope taut and secure with clamps (item

F).

Clamps. Use four to secure each item E.

Bracing. Each consists of 6- X 8-in. X length cut-to-suit.

as required

Brace as required against adjacent vehicle, cargo, or side of

vessel bulkhead as appropriate. Material for this requirement

is not included in table 6-3.

Lumber, 2- X 12- X 30-in. Pre-position on vessel deck so that

two pieces are centerd under each landing gear pad.

Bracing. Each to consist of one piece of 4- X 6- X 82-in.

lumber. Locate on tip of item H. one againet front and one

against rear edge of landing gear pads. Nail each piece to item

H with eight 40d nails.

6-6. Landing Ships,

Landing Craft, and Am-

blocking and tiedowns must be used. In most cases,

phibians

the vessels are equipped with turnbuckles with a

sheep's-foot fitting on one end that fits into a deck

When transporting the HET and C-HET systems

cloverleaf. Where not provided, a suitable sub-

for extended distances or through rough waters,

stitute may be used.

6-8