W A T E R O P E R A T I O N S : E N T E R I N G W A T E R
I N I T I A L S E T UP
Personnel Required:
Equipment Conditions:
Driver
Engine stopped (page 2-184)
Crew
NOTE
Use earner loaded as
m i n e d f r o m
dip
(page 2-287).
1.
2.
deter-
check
Perform PREPARATION
BEFORE WATER OPERATION,
steps 1 thru 33 (page 2-275) and
CARRIER DIP CHECK, steps 1
thru 12 (page 2-287).
Measure speed of the water
current prior to entering water as
follows:
a.
b.
c.
Position two personnel (or
objects) at least 100 feet apart
near the stream bank.
(Position at entry point is A
and position 100 feet
downstream is point B.)
Toss in any object which will
float to point B.
Measure the time it takes the
floating object to go from point
A to point B. When object
takes less than 35 seconds,
stream is too fast DO NOT
ENTER WATER.
d. Test the stream near the
bank, along the edges of the
stream, and in the middle of
the stream.
NOTE
The maximum speed of the wa-
ter in which the carrier can safe-
ly cross depends on such factors
as water choppiness, amount of
ice or other debris, overhanging
tree limbs, underwater obstacles
and the maximum acceptable
downstream drift distance.
3. Water must be from of ice and
debris. Use the terrain and water
obstacle limits below before
entering the water.
Current . . . . . . . . . . 2.0 mph (Maximum)
Waves . . . . . . . . . .6 inches (Maximum
2-290
T M 9 - 2 3 5 0 - 2 6 1 - 10