USW Flashcards

1
Q

What does sonar stand for

A

Sound navigation and ranging

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2
Q

What are the two types of sonar

A

Active

Passive

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3
Q

What make up the sonar suite

A
AN/SQS-53C Hull mounted sonar
AN/SQS-19B TACTAS
AN/SQS-28 sonobuoy  processor
MK 116 FCS
Auxiliaries
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4
Q

What fills sonar dome

A

26,000 gal of fresh water

With a pressure of 39.5 psig

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5
Q

How many feet in cable must remain on the drum when deploying full scope?

A

400 Ft

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6
Q

How long is MFTA?

A

610 Ft

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7
Q

How many modules make up MFTA?

A

Seven (7) modules

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8
Q

How long is the tow cable between the MFTA and the winch?

A

5600 Ft

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9
Q

What do we get from active sonar

A

Bearing

Range

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10
Q

What do we get from passive sonar

A

Frequency

Bearing

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11
Q

Define AN/SQS-53C

A

Multi mode
Hull mounted
Active and passive sonar system

Provides 360 deg of active and passive coverage

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12
Q

How many element are apart of the 53C

A

576 acoustic

Arranged in columns of 8 elements to make 72 staves

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13
Q

How long is the drouge

A

75ft

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14
Q

Which antenna is used with over the side deployed sonobuoys

A

ARR-75 ship board sonobuoy receiver

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15
Q

What torpedoes can we fire

A

MK 46
MK 54
VLA

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16
Q

What is the MK of SVTT on board

A

MK 32

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17
Q

What’s the other name for DIFAR

A

Pointer

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18
Q

Define DIFAR

A

Passive only directional buoy

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19
Q

What’s the other name DICASS is called

A

Cadillac

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20
Q

Define DICASS

A

Directional command activated sonobuoy system

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21
Q

What is the function of the MK 116

A

To solve the under water fire control problem and compute parameters for launching ASW weapons

22
Q

What fuel does the MK 46 use

A

Otto fuel

23
Q

What does SVTT stand for

A

Am surface vessel torpedo tubes

24
Q

How many torpedoes does a mount hold

A

3

25
Q

What are the air flask charged up to

A

1600pis

26
Q

How many torpedoes are in the torp mag

A

9

27
Q

Name the auxiliary systems of USW

A
WQC-2A
WQC-6
UQN-4A
XBT
OBT
UYQ-25B SIMAS
TDSS
SLQ-25C
28
Q

What is the other name for the WQC-2

A

Gertrude

29
Q

What is the function of WQC-2

A

Two way, underwater, sub to sub, sub to ship, and ship to ship, non secure, voice communication

30
Q

Where is the WQC-2 located

A

Main-sonar control
Remote unit- under the CO’s chair
Electronic cabinet is located in SONAR

31
Q

Define the WQC-6

A

Probe alert

One way,underwater,ship to sub, encrypted comms, utilizing the SQS-53C sonar array

Located in sonar control

32
Q

Define the BQH-7A (XBT)

A

Expendable bathythermograh

Provides sonar with the temperature vs depth profile measured down to 1500ft

33
Q

Define the UQN-4A

A

Used to provide water depth from the keel to bottom of the ocean in feet or fathoms

34
Q

What is the UQN-4A

A

Fathometer

35
Q

Where is the UQN-4A Fathometer located

A

Sonar control

With repeaters located in CIC, chart room, and the pilot house

36
Q

Where is the Fathometer transducer located

A

In FWD IC

37
Q

What does OBT stand for

A

On board trainer

38
Q

What is the function of OBT

A

Training device used to conduct real world and simulated environmental and USW tactical training

Located in sonar control and CSER 2

39
Q

What is the UYQ-25B

A

SIMAS

40
Q

What does SIMAS stand for

A

Sonar in-situ mode assessment system

41
Q

What does TDSS stand for

A

Tactical decision support subsystem

42
Q

What is the function of TDSS

A

Data base management and target motion analysis

43
Q

What is the SLQ-25C

A

Nixie

44
Q

What is Nixie

A

Torpedo counter measure, streamed behind the ship

Provides coverage for active and passive homing torpedoes

45
Q

What are the 6 modes of Nixie

A
Swept
Noise
Alternate
Pulsed
Random
MICM
46
Q

What does MICM stand for

A

Magnetic influence counter measure

47
Q

Name the three sonobuoys we have

A

DIFAR
DICASS
VLAD

48
Q

What is the other name for VLAD

A

Totem pole

49
Q

What type of buoy is VLAD

A

Passive

50
Q

What does VLAD stand for

A

Vertical line array DIFAR

51
Q

Name three factors that affect sound speed

A

Temp 6
Salinity 4
Pressure 2