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TM 55-3805-248-14
CHAPTER 6
MARINE AND TERMINAL TRANSPORTABILITY GUIDANCE
Section I. GENERAL
NOTE
6-1.
Scope.
When the tractor-scraper is loaded on
This chapter provides marine and terminal trans-
vessels that are adequately ventilated by
portability guidance for movement of the tractor-
power blowers, such as those commonly
scraper, M621B. It covers significant technical
found on the roll-on/roll-off (RORO) ships,
and physical characteristics, as well as safety
fuel tanks need not be drained.
concerns, and prescribes the materials and guid-
ance required to prepare, load, tie down, and
6-3. Water Shipment.
unload the vehicle.
The tranctor-scraper can be transported aboard
US-flag merchant vessels, including Military
6-2.
Safety.
Sealift Command ship, as follows:
In addition to the safety precautions contained in
a. On or below decks of any breakbulk ship
chapter 3, the following areas apply:
with a 30-long-ton lift capability. Required mini-
a. All vessel equipment and gear should be
mum hatch sizes and clear headroom are hatch
inspected before use.
length, 42 feet 6 inches; hatch width, 12 feet 4
b. All stevedore slings and other items used in
inches; clear headroom, 12 feet 6 inches.
loading and unloading operations should be
b. On any RORO ship or trailership with clear
checked for their conditions and capacity.
deck heights of 12 feet 6 inches and ramp width
c. All other precautionary measures and safety
of at least 13 feet 6 inches.
regulations peculiar to the loading/unloading site
c. In any SEABEE barge.
or terminal will be adhered to.
NOTE
d. Vehicle fuel tanks must be drained and
The methods described in this chapter for
battery terminals must be disconnected.
lifting and securing the tractor-scraper
e. Vehicle transmission must be placed in the
are suggested procedures. Other methods
of handling and stowage may be used to
neutral position and the park brake on (air
accomplish safe delivery without damage.
removed).
Section II. LOADING AND SECURING
l a s h e d with wire rope or chains to nearby
6 - 4 . General Rules f o r Stowing.
padeyes, bulkheads, or stanchions.
a. General. Whenever possible, vehicles should
b. Lifting. The correct lifting points on the
receive the protection of below-deck stowage. In
vehicle are the lift eye provisions located on the
general, good stowage of vehicles means vehicles
rear top of the scraper and at either sie of the
are placed fore and aft as close together as
gooseneck hinge pivot point. (See fig. 6-1).
practical, with minimum spacing between outer
CAUTION
vehicles and the sweatboards - about 4 to 6
Before the vehicle is lifted, effect lockout
inches. Breakable parts or auxiliary equipment of
of the vehicle's steering/articulation unit
the vehicles should be adequately protected and
by installing two blocks on the steering
secured for shipment. Spare parts and OEM, if
cylinders.
not shipped on the vehicle, should be properly
c. Loading. Prior to loading, fold the side
identified as to location or disposition during the
mirror flush with the cab. The tractor-scraper can
shipment. Vehicles in the ship's hold should be
be loaded over the beach or from piers onto
blocked in front, in rear, and on both sides of the
landing craft, landing ship tanks (LST), and
wheels so that the vehicle cannot move in any
landing ship docks (LSD) under its own power or
direction; individual vehicle blocks should be
by crane of adequate capacity. The vehicle can
also be loaded under its own power onto the deck
braced to bulkheads. stanchions, and other vehi-
of barges from pierside when tidal conditions are
cle blocks. Additionally, all vehicles should be
6-1

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