TM 55-607/NAVSEA OP 3221 Rev 2
the sweatboards and ribs and to distribute the load more
9-3. Securing of Round, Single-Item Loads
effectively. Additional 2- by 10- or 2- by 12-inch
a. 3,000-Pound General-Purpose (GP) Bomb. The
boarding is secured horizontally to the upright members
3,000-pound bomb is a typical cylindrical single-item
at the point where contact of' the bomb would occur; that
load that is representative of' the majority of
is, 12 inches on centers, as measured from the flooring.
commodities in the classification. In the securing of
Stowage of bombs begins at the aft corner of the
round items, such as bombs, it is of particular
compartment. The first bomb is positioned fore and aft
importance to eliminate all voids, in the stow, that could
in full longitudinal contact with the boarding, the base
permit cyclic rolling of the load in response to ship
bearing tightly against the heat bulkhead. Athwartship
motions. A secure stow can be achieved by positioning
movement is prevented by the installation of 4- by 4-
the bombs in tight contact with each other to unitize the
inch chocks beveled to wedge shape on each end and
load. Further restraint is attained by installing chocking
cut to the necessary length to secure to the floor
after each bomb is in place. Nonpalletized bombs are
between bombs, one forward and one aft. The next
loaded in a fore-and-aft orientation to eliminate the
bomb is positioned tightly against the first and is
possibility of penetration of' the hull by the pointed bomb
chocked similarly. After completion of the row, 2- by 10-
noses. This is especially significant for 3,000-pound
or 2- by 12-inch separators, 2 feet high, are positioned
bombs; the pointed nose can exert extreme pressure
upright between bomb noses. The separators are
upon impact with any surface due to its small area in
capped with a 2- by 10- or 2- by 12-inch member, which
relation to the high item weight. Although stowed most
serves as a flooring support over the sloping bomb
efficiently in rectangular tween-deck compartments, the
noses. In the installation of the 2-inch floor, the first
3,000-pound bomb loads readily in holds with
course is laid athwartships directly over the bombs. To
appreciable hull curvature, when proper securing is
separate and provide necessary protection between
installed.
rows of bombs, a 2- by 10- or 2- by 12-inch nose board
(1) Figure 9-26 illustrates stowage of 3,000-
is secured to the upright structure. Following rows are
pound bombs on the tween deck, in the number 3 hold.
stowed with the preceding rows in solid contact with the
Hull curvature is not a factor in this compartment. Since
nose board. Voids occurring in the stow are secured
metal-to-metal contact would otherwise occur, 2-inch
with full-block structures maintaining the fore-and-aft
flooring must be laid prior to loading. Boarding, usually
orientation of the bombs.
2- by 6- or 2- by 10-inch lumber, is installed at equal
intervals of 2 to 3 fleet along the sides of the
compartment to prevent the bombs from contacting with
9-33
