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Ship Control Panel - Oops, Ahead Flank
This photo was taken from the attack center looking forward and port to the
ship control panel, where there is an airplane-style control panel with a
console set between two seats. On the right is the helmsman's station.
When submerged, the helmsman will normally also control the fairwater planes
by pulling or pushing the control yoke. Turning the yoke moves the rudder
aft. The central console contains the hydraulic controls so that the ship
control party can use normal or emergency hydraulics. The panel above has
all the instruments that report angle, depth, control surface angle. Below
the right yoke is the engine order telegraph, where the dial selects the
correct speed for the maneuvering (nuclear control watchstanders) to make.
The station on the left side of the console is the sternplane operator, who
has more influence on ship's depth, which is why he only has that task. The
seat aft of the console is for the diving officer, who supervised the ship
control party and reports to the officer of the deck. Further off to port
is the ballast control panel, where the ballast tank vents are controlled as
well as the emergency blow system, hovering system and drain system. The
chief of the watch (COW) takes his station here, trimming the boat's overall
weight at the orders of the diving officer. The engine order telegraph
below the right yoke has a sea story. We were in trail of a Victor Russian
attack sub, sneaking behind him at 12 knots, dead quiet, rigged for
ultraquiet, watchstanders tip-toeing, with main coolant pumps in slow speed
(giant car-sized pumps that push water through the reactor core, which are
quiet in slow speed but loud as freight trains in fast speed). The helmsman
chose this time to cross his legs, and hits the engine order telegraph with
his boot. The needle goes from "ahead 1/3" to "ahead flank." Now "flank"
is 100% reactor power, all out, 30 knots and then some, with the automatic
order to the maneuvering guys to start the pumps in fast speed. I was on
watch aft that night, and we were in trail of the Russian, a little tense,
and all of a sudden we get a flank bell. Holy shit! Ivan's coming at us,
or there's a torpedo in the water, or he's heard us and is coming around to
ram us. It was an emergency. I leaped out of my seat and stood over the
reactor operator as he immediately reached for the handle to main coolant
pump 2 and pulled to start it in fast speed. The pump doubled its speed,
which causes a check valve in a 12" pipe to slam shut to keep from reverse
flowing the other pump. BOOM! The checkvalve slammed, the noise resounding
in the sea. The reactor operator a tenth of a second later starts pump 3 in
fast speed. Another BOOM. Pump 4, then 5, two more booms. The throttleman
starts cranking open the throttle, feeding steam to the ahead turbines - the
main engines - carefully, avoiding cavitation when sheets of steam boil up
from the screw low pressure side, the bubbles collapsing in the sea and
screeching out noise. We climbed from 35% power past 50% as the pumps came
to fast speed to 60%, 70%, 90%, then leveled off carefully but quickly at
100% power, the speed indicator forward moving from 12 knots to 15, 20, 25.
The officer of the deck, my boss and friend Tim Mulcare, the navigator,
hears the four check valve slams when rigged for quiet and feels the deck
start to tremble and sees the speed indicator climbing. The helmsman still
didn't know what happened. Tim grabs the phone to shout at me in time to
hear me crisply report, "Conn, Maneuvering, all main coolant pumps running
in fast speed, answering ahead flank!" "All stop!" Tim shouts. "Switch
your pumps to slow speed!" Up forward all hell broke loose. The captain
came running from his stateroom, the XO shows up, and we almost rammed Ivan
ahead right on the rudder. "Right five degrees rudder!" Tim shouted, trying
to keep us off the Victor submarine's screw. We had pulled abreast of the
Victor after slamming 4 check valves and blasting fast speed pump noises out
into the water. For the next ten minutes we waited, panicking, wondering if
Victor heard us. Russians have a nasty tendency to try to turn and ram
trailing subs, for the purpose of deterrence. But Ivan steamed on,
oblivious. "Thank God Dmitri was on watch," Tim said later, the OODs having
named each Russian watchstander, knowing their habits and routines. "If
Sergei was deck officer, we'd be going home with a Soviet torpedo up our ass."
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