TM 55-607/NAVSEA OP 3221 Rev 2
Figure 9-40. Stowage of 500-pound-bomb unit loads in rectangular compartments.
applied more efficiently in wider compartments, such as
(4) Blockage stowage of palletized bombs.
the upper tween, in which space utilization can be
(a) Securing the 500-pound-bomb unit
improved. The stability of the illustrated stow is evident
load in compartments with significant hull curvature
in the aligned, tightly contacting tiers confined parallel to
requires construction of block-stow structures to restrain
the ship's center line. Construction details for general
block-type securing closely follow the principles
three-high block stowage of 500-pound bombs in a lower
hold of a typical C3 hull. Block stowage is particularly
are required to secure the end unit loads of each three-
advantageous in narrow, contoured compartments, such
high tier, since the tiers are not held in position by
as in forward and aft lower holds. Emplacement of the
unit loads in block fashion prior to installation of
of prefabricated shoring in which the parallel securing
dunnaging considerably reduces requirements for
structures are constructed as a unit, raised into place,
precise measuring and construction in confined areas.
and braced to the hull or structural ribs before loading.
Extending the stow fully to the sweatboards in such
The 2- by 10-inch boarding facilitates prefabrication and
areas is not recommended, since the potential number
is fastened to the uprights at the premeasured level of
of additional unit loads stowed per row does not warrant
each tier, thereby providing additional bearing surface
the additional dunnaging and stowage time required.
However, sweatboard-to-sweatboard stowage can be