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 SHIP-TO-SHIP DISCONNECTION
CHAPTER 9.
9.1 RESPONSIBILITY. Ship-to-ship disconnection is the responsibility of
ships' crews unless assistance has been requested from the shore support
forces.
9.2 NESTED SURFACE SHIP DISCONNECTIONS. When ships are preparing to transit
restricted waters after nesting, all of the ships should be notified to
secure their pumps. The outboard ship should initiate salt water flushing
action to cleanse all sewage transfer piping and hoses. After flushing,
disconnect the highest hose connection to allow the hoses and systems to
drain. All pump discharge check valves should be held open to permit hoses
to drain back into the CHT tank. After maximum draining has occurred, the
rest of the hoses should be disconnected and allowed to drain thoroughly
over the side. The departing ships will cap or plug their onboard hoses and
pass them to the shore support forces for return to storage. The crew should
double-check that deck discharge valves at both hose ends are closed prior
to disconnecting hoses.
9.3 SUBMARINE TENDER-SUBMARINE DISCONNECTIONS. Submarine transfer proce-
dures are similar to those for surface ships, except that, after the receiv-
ing station hose connections are made, submarines must obtain permission
from the tender before discharging sewage to it. When possible, a complete
air blow of the hoses and piping should be done before disconnecting sewage
hoses to minimize spillage during disconnection procedures. The submarine
air blow pressure must not exceed the hose pressure capability.
9.4 SUBMARINE HOSE FLUSHING. Submarines do not have the capability to flush
their discharge lines and the shore transfer hoses. The shore support crew
should connect the transfer hoses to the nearest salt water riser and flush
the hose full bore into the harbor for 10 to 15 minutes to accomplish the
hose flushing sequence.
9.5 SEWAGE BARGE-SURFACE SHIP DISCONNECTIONS. When the sewage barge has
received its capacity of sewage~ the CHT system of the vessel being serviced
is placed in the holding mode. Disconnection procedures then begin.
Sewage barges are not equipped with auxiliary salt water pumps for
flushing their hoses. This function is performed by the ship before the
barge departs. Salt water flushing of hoses" is performed by the ship as if
it were at pierside. Flushing water is discharged to the barge. After
flushing, hoses are disconnected and laid in the storage racks on the barge.
9-1
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