MCRP 3-02C
1-12
object floats. If the weight of the displaced liquid is less than the
weight of the object, the object sinks. For example, a machine
gun sinks in the water, but it still weighs less in the water than it
does on land. Even though a machine gun sinks, it is still buoyed
up by a force equal to the weight of the water it displaces. For this
reason, you should not try to hold yourself or your equipment any
higher out of the water than they would naturally float; doing so
wastes both energy and body heat.
Preparing Equipment
Before packing your pack, you must prepare your gear/equip-
ment. Tape or pad all sharp edges and equipment corners. Ideally,
your gear/equipment is placed in plastic bags and the plastic bag
is then placed inside the standard-issued, rubberized, waterproof
bag. Waterproof bags are not completely water tight; henceforth,
the added protection of first wrapping the gear/equipment in a
plastic bag, then placing the plastic bag inside the waterproof bag.
Large plastic bags (e.g., trash bags) work well for bulky equip-
ment (e.g., sleeping bags, field jackets, shelter halves, gas
masks). Small plastic bags work best for small items (e.g., shav-
ing gear).
NOTE: If a gas mask must be carried outside the
pack, cover it with a waterproof bag.
You will need the following items, which are available through
the supply system, to prepare your equipment for packing:
O Waterproof bags:
Pistol bag, plastic size #1 (8" x 18").
Rifle bag, plastic size #2 (10" x 56").
Machine gun bag, plastic size #3 (15" x 56").
Multipurpose bag, cover, plastic size #4 (20" x 84").