TM 55-1930-209-14&P-1
NOTE
Ballasting may be necessary to establish 9 Inch bow high trim in preparation for
towing or to establish barge on an even keel when deployed for processing water.
11-12.5 Filling ballast tank (to correct a bow high condition)
NOTE
Filling ballast tank requires only one seawater pump. The other seawater pump
may be used to supply seawater to one ROWPU unit. See Figures 11-1 and 11-2 for
seawater valve locations.
11-12.5.1 Filling ballast tank from forward seachest
a.
Perform prestart procedures in paragraph 11-11.
b.
Open seawater valves SW31 thru SW34 in void 2 starboard.
c.
Close seawater valves SW4 thru SW8, SW11, SW12, SW18, and SW20 in void 2 starboard.
d.
Open or dose seawater valves as follows:
o = open
x = closed
- = not affected
Seawater (SW) valve no:
Seawater supplied by:
1
2
9
10
16
17
19
21
29
Seawater pump 1. only
o
-
o
-
o
-
x
-
o
Seawater pump 2 only
-
o
-
o
x
o
o
x
o
Both seawater pumps
o
o
o
o
o
o
o
x
o
e.
Make sure switchboard circuit breakers P6 and P7 are closed (ON).
f.
Start seawater pump using local control switch in void 2 starboard.
CAUTION
Do not overfill ballast tank.
g.
While filling ballast tank, perform during operation checks in steps i thru m in paragraph 11-12.1.1.
h.
To prevent overfilling, check ballast tank visual level indicator and display page on EMS video monitor. If EMS
alarms sound, stop filling and stop alarms according to procedures in Chapter 8.
i.
Stop seawater pump when inclinometer in void 2 starboard indicates desired trim.
11-12.5.2 Filling ballast tank from starboard shell
a.
Perform prestart procedures in paragraph 11-11.
b.
Open seawater valves SW31 thru SW34.
c.
Close seawater valves SW7, SW8, SW11, SW12, SW18, and SW20.
11-26