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 TM 55-1905-219-14-2
2-92. FILLING BALLAST TANKS - USING GRAVITY.
a.
The ballast tanks can be filled by gravity as follows (refer to Figure FO-46).
NOTE
The tanks will fill to the depth of the water line.
b.
Aft Engine Room
(1)
Rotate vent valve (1, Figure FO-46) in sea chest, clockwise.
(2)
Place flow control valve (2, Figure FO-46) lever in the on position.
(3)
Rotate valve (3, Figure FO-46) counter-clockwise.
(4)
Rotate suction valve (4, Figure FO-46) clockwise to 1ill the aft ballast tank.
c.
Crew and Transient Berthing (2-33-2-L).
Rotate drain valve(s) (5, Figure FO-46) clockwise to fill the starboard, port or peak ballast tank.
d.
Reefer Room (2-28-0-A).
Rotate fill valve (6, Figure FO-46) counterclockwise to fill the peak ballast tank.
2-93. DRAINING BALLAST TANKS - USING GRAVITY.
a.
The ballast tanks can be drained by gravity, as follows (refer to Figure FO-47).
NOTE
The tanks will empty to the depth of the water line.
b.
Aft Engine Room.
(1)
Rotate vent (1, Figure FO-47) in sea chest, clockwise.
(2)
Place flow control valve (2, Figure FO-47) lever in the on position.
(3)
Rotate valve (3, Figure FO-47) counter-clockwise.
(4)
Rotate suction valve (4, Figure FO-47) clockwise to drain the aft ballast tank.
c.
Crew and Transient Berthing (2-33-2-L).
Rotate drain valve(s) (5, Figure FO-47) to clockwise to drain the starboard, port or peak ballast tank.
Change 2
2-430
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