USW Flashcards
What does sonar stand for
Sound navigation and ranging
What are the two types of sonar
Active
Passive
What make up the sonar suite
AN/SQS-53C Hull mounted sonar AN/SQS-19B TACTAS AN/SQS-28 sonobuoy processor MK 116 FCS Auxiliaries
What fills sonar dome
26,000 gal of fresh water
With a pressure of 39.5 psig
How many feet in cable must remain on the drum when deploying full scope?
400 Ft
How long is MFTA?
610 Ft
How many modules make up MFTA?
Seven (7) modules
How long is the tow cable between the MFTA and the winch?
5600 Ft
What do we get from active sonar
Bearing
Range
What do we get from passive sonar
Frequency
Bearing
Define AN/SQS-53C
Multi mode
Hull mounted
Active and passive sonar system
Provides 360 deg of active and passive coverage
How many element are apart of the 53C
576 acoustic
Arranged in columns of 8 elements to make 72 staves
How long is the drouge
75ft
Which antenna is used with over the side deployed sonobuoys
ARR-75 ship board sonobuoy receiver
What torpedoes can we fire
MK 46
MK 54
VLA
What is the MK of SVTT on board
MK 32
What’s the other name for DIFAR
Pointer
Define DIFAR
Passive only directional buoy
What’s the other name DICASS is called
Cadillac
Define DICASS
Directional command activated sonobuoy system
What is the function of the MK 116
To solve the under water fire control problem and compute parameters for launching ASW weapons
What fuel does the MK 46 use
Otto fuel
What does SVTT stand for
Am surface vessel torpedo tubes
How many torpedoes does a mount hold
3
What are the air flask charged up to
1600pis
How many torpedoes are in the torp mag
9
Name the auxiliary systems of USW
WQC-2A WQC-6 UQN-4A XBT OBT UYQ-25B SIMAS TDSS SLQ-25C
What is the other name for the WQC-2
Gertrude
What is the function of WQC-2
Two way, underwater, sub to sub, sub to ship, and ship to ship, non secure, voice communication
Where is the WQC-2 located
Main-sonar control
Remote unit- under the CO’s chair
Electronic cabinet is located in SONAR
Define the WQC-6
Probe alert
One way,underwater,ship to sub, encrypted comms, utilizing the SQS-53C sonar array
Located in sonar control
Define the BQH-7A (XBT)
Expendable bathythermograh
Provides sonar with the temperature vs depth profile measured down to 1500ft
Define the UQN-4A
Used to provide water depth from the keel to bottom of the ocean in feet or fathoms
What is the UQN-4A
Fathometer
Where is the UQN-4A Fathometer located
Sonar control
With repeaters located in CIC, chart room, and the pilot house
Where is the Fathometer transducer located
In FWD IC
What does OBT stand for
On board trainer
What is the function of OBT
Training device used to conduct real world and simulated environmental and USW tactical training
Located in sonar control and CSER 2
What is the UYQ-25B
SIMAS
What does SIMAS stand for
Sonar in-situ mode assessment system
What does TDSS stand for
Tactical decision support subsystem
What is the function of TDSS
Data base management and target motion analysis
What is the SLQ-25C
Nixie
What is Nixie
Torpedo counter measure, streamed behind the ship
Provides coverage for active and passive homing torpedoes
What are the 6 modes of Nixie
Swept Noise Alternate Pulsed Random MICM
What does MICM stand for
Magnetic influence counter measure
Name the three sonobuoys we have
DIFAR
DICASS
VLAD
What is the other name for VLAD
Totem pole
What type of buoy is VLAD
Passive
What does VLAD stand for
Vertical line array DIFAR
Name three factors that affect sound speed
Temp 6
Salinity 4
Pressure 2
