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SONAR Flashcards

1
Q

What are the two types of sonar?

A

Active

Passive

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2
Q

What does sonar stand for?

A

Sound Navigation and ranging

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3
Q

What does active sonar read?

A

Range and bearing

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4
Q

What does passive sonar read?

A

Bearing. Listen only

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5
Q

What is AN/SQS-53C?

A

Hull mounted sonar

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6
Q

What type of sonar system is SQS-53C? What is the primary system?

A

Active and passive.

Primary: Active

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7
Q

How much gallon and what type of water is in sonar dome?

A

26,000 fresh water

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8
Q

What is the sonar dome pressurized with?

A

Fireman

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9
Q

How many transducers are in SQS-53C?

A

576 (72 staves and 8 rows)

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10
Q

If there is a dome casualty what must the ship do?

A

Slow down to 5 knots and head back to port

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11
Q

What does MFTA stand for?

A

Multi Function Towed Array

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12
Q

Is MFTA active or passive?

A

Passive

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13
Q

How long is MFTA cable scope? And how much is deployed?

A

5,600 feet

5,200 feet deployed

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14
Q

How long is MFTA array?

A

610 ft

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15
Q

How long is MFTA drogue?

A

150 feet

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16
Q

What stables the array as it travels thru the water?

A

The drogue

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17
Q

How many MFTA modules are there?

A

7

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18
Q

What is the array filled with?

A

ISOPAR

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19
Q

What does ISOPAR do for the array?

A

Gives it neutral buoyancy

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20
Q

What is MFTA deployment speed?

A

3-15 knots

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21
Q

What is MFTA retrieval speed?

A

10-15 knots

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22
Q

What is MFTA max tow speed?

A

32 knots

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23
Q

How many sonar buoys are there and what are they called

A

3

DIFAR (Pointer) AN/SSQ-53

DICASS (Cadillac) SSQ-62

VLAD (TOTEM POLE) SSQ-77

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24
Q

What is SSQ-53 also called?

A

DIFAR (Pointer)

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25
Q

is DIFAR active or passive?

A

Passive

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26
Q

What is SSQ-62 also called?

A

DICASS (Cadillac)

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27
Q

Is DICASS Buoy active or passive?

A

Active

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28
Q

What is SSQ-77 also called?

A

VLAD (Totem pole)

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29
Q

Is VLAD active or passive?

A

Passive

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30
Q

What does DIFAR stand for?

A

Directional Low Frequency Analysis Recording

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31
Q

What does DICASS stand for?

A

Directional Command Activated Sonar System

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32
Q

What does VLAD stand for?

A

Vertical Line Array DIFAR

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33
Q

What system is sonar buoys used as?

A

Re-detection

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34
Q

What is the ARR-75?

How many buoys can process?

A

Line of sight receive only antenna

4 passive 1 active

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35
Q

How many buoys can the helio process through SQR-4 Via HAWKLINK?

A

8

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36
Q

How many sonarbuoys can the helio carry

A

25

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37
Q

What is a two-way encrypted data and voice comms from ship to helio and helio to ship?

A

HAWKLINK

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38
Q

What does Hawklink and SQR-4 increase for sonarbuoys processing?

A

RANGE

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39
Q

All info collected from sonar buoys is processed and displayed on what?

A

SCFS

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40
Q

What does SCFS stand for?

A

Surface common Airborne undersea warfare sensor system functional segment

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41
Q

What is MK 32?

A

Surface Vessel Torpedo Tube (SVTT)

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42
Q

Where are SVTT tubes located and how many on each side?

A

Port and STBD mid ships.

Three on each side

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43
Q

Is the SVTT a offensive or defensive weapon system?

A

Defensive

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44
Q

What kind of torpedoes can the MK 32 fire?

A

MK 46 and MK 54

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45
Q

What is the active range for AN/SQS-53C?

A

80,000 yards

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46
Q

What is AN/SQS-53C brevity code?

A

Lance Searcher

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47
Q

What is MFTA brevity code?

A

Serpant

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48
Q

What degree are MK 32 tubes pointed before firing?

A

45 degrees

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49
Q

What kind of air is used to fire the torpedoes?

A

HP air

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50
Q

What are the flask charged for the MK32?

A

1500-1600 psi

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51
Q

Where can the torpedoes be fired from?

A

CSER 3 annex, CIC, or locally at tubes

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52
Q

What is used to fire torpedoes in CSER 3 annex?

A

TSP(Torpedo Setting Panel)

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53
Q

What is used to fire the torpedoes in CIC?

A

UCFS

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54
Q

What is MK 41?

Where is it located at?

A

VLS (Vertical launching system)

Aft missile deck and forecastle

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55
Q

Where can MK 41 be fired from and using what?

A

CIC USING UCFS

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56
Q

What is MK 46?

A

Thermal torpedo

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57
Q

What are two modes of MK 46?

A

Run-out(snake search)

No run out (circle search)

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58
Q

How many pounds is the high explosive bulk charge warhead?

A

98 lbs of PBXN 103

59
Q

What type of fuel does the MK 46 use?

A

Otto fuel 2

60
Q

How does Otto fuel 2 keep burning?

A

Creates its own oxygen

61
Q

What does Otto fuel smell like and what color is it?

A

Roasted almonds

Red-orange

62
Q

Where is the spilled kit located for the Otto fuel?

A

Outside CCS

63
Q

What type of torpedo is the MK 54 ?

A

Hybrid thermal torpedo

64
Q

What is the min and max range for MK 46?

A

Min 3,500 yds

Max 8,000 yds

65
Q

How many pounds is the high explosive shaped charge warhead for MK 54?

A

64 lbs of PBXN110

66
Q

What are the two modes of MK 54?

A

Directed(snake search)

NON DIRECTED (circle search)

67
Q

What is the min and max range of the MK 54?

A

Min 3,500 yds

Max 8,000 yds

68
Q

What does VLA stand for?

A

Vertical launch ASROC(anti submarine rocket)

69
Q

What is the booster drop zone for VLA?

A

2,500- 5000 yds

70
Q

What is the min and max range for VLA?

A

Min 3,000 yds

Max 18,000 yds

71
Q

What is the brevity code for VLA?

A

Bassett

72
Q

What are sonars air assets?

A

MH-60R

P-3 Orion

P-8 Poseidon

73
Q

How many buoys can the MH-60R take off with and many can it return with?

A

Take off with 3 l

Land with only 2

74
Q

How many buoys can the MH-60R carry?

A

25

75
Q

What type of weapon system is the MH-60R? Offensive or defensive

A

Offensive

76
Q

How many buoys can the P-3 Orion carry?

A

84

77
Q

What is the P-3 Orion?

A

Long range ASW aircraft that can assist the ship

78
Q

How many buoys can the P-8 Poseidon carry?

A

120 buoys

79
Q

What is the P-8 Poseidon and what can it do that the P-3 can’t

A

Long range ASW aircraft. Can stay in the air longer than p-3

80
Q

What is the AN/SLQ-25C other name?

A

NIXIE (fanfare)

81
Q

What is nixie original name?

A

AN/SLQ-25c

82
Q

What is nixie (AN/SLQ-25C) primary function?

A

Torpedo countermeasure.

83
Q

What type of torpedoes does the nixie protect the ship from?

A

Acoustic-homing and wake homing torpedoes

84
Q

How many towed bodies does the nixie have and what are the bodies called?

Where are they located?

A

Two towed bodies

FISH

Port and STBD side

85
Q

How many feet is nixie cable scope?

A

2,100 feet

86
Q

What is the max deployable length for nixie?

A

2,000 feet

87
Q

How many feet does the nixie stay on the winch?

A

100 feet

88
Q

What are the 6 modes for nixie?

A 
Swept
Noise
Alternate
Pulse
Random
Broadband
89
Q

What are the two sub modes for nixie?

A

Magnetic Influenced Countermeasure (MICM

Reactive Magnetic Countermeasure (RMC)

90
Q

What does MICM stand for?

A

Magnetic influenced countermeasure

91
Q

What does RMC stand for?

A

Reactive Magnetic Countermeasure

92
Q

What is AN/WQC-2A brevity code?

A

Gertrude. Uncle joe on Gertrude

93
Q

What does AN/WQC-2A do?

A

Provides two way unencrypted voice communications

Example: ship to ship, ship to sub, sub to sub

94
Q

Where is unit 3 of AN/WQC-2A located?

A

Sonar 2

95
Q

Where is unit 2 of AN/WQC-2A located?

A

Bridge

96
Q

What is AN/WQC-6 brevity code?

A

Probe alert

97
Q

What does AN/WQC-6 provide?

A

One way encrypted communications

Example: ship to sub

98
Q

What does AN/UQN-4A provide?

A

Provides depth beneath the keel

99
Q

What does AN/UQN-4A calculated and how?

A

Calculates depth by sending out small active sonar transmissions

100
Q

How many and where are AN/UQN-4A repeaters?

A

3

Located in CIC, Bridge, Chart room

101
Q

Sound speed is how many feet per second underwater?

A

5000 fps

102
Q

Sound speed helps determine what thru the water?

A

Propagates (moves)

103
Q

How many factors effects sound speed? And what are they?

A

3

Temperature

Salinity

Pressure

104
Q

What type of probe is XBT?

A

Temperature probe

105
Q

What does XBT stand for?

A

Expendable Bathythermograph

106
Q

How many feet does the XBT fall?

And how long does it take it to fall

A

1500 ft in 90 sec

107
Q

What does the front probe of the XBT do?

A

Measure resistance

108
Q

All the data collected by the XBT gives a what?

A

Sound speed profile

109
Q

What is Snell’s law?

A

Sound goes in the path least resistant

110
Q

What does PMAP stand for?

A

Protective Measures Assessment Protocol

111
Q

What is PMAP used for?

A

Used for going active or doing gun shoots to help protect marine life

112
Q

How many functional segments does the AN/SQQ89A (v) have?

A

15

113
Q

What does ACIFS stand for?

What does it do?

A

Acoustic Intercept Functional Segment

Allows us to see when other ships or subs are using active sonar

114
Q

What does BFFS stand for?

What is it used for?

A

Beam Forming Functional Segment

Gives us Status of our hull and towed array

115
Q

What does HPPFS stand for?

What is used for?

A

Hull passive processing functional segment.

Used for hull passive sonar

116
Q

What does MFAFS stand for?

What is it used for?

A

Mid-Frequency Active Functional Segment.

Used to display hull active sonar

117
Q

What does PAFS stand for?

What is it used for?

A

Passive acoustic functional segment

Used to display the info from MFTA

118
Q

What does RECFS stand for?

What is it used for?

A

Recorder Functional segment.

Used to record what is on the sonar suite consoles

119
Q

What does SPPFS stand for?

What is it used for?

A

Sensor performance prediction functional segment.

Used to give environmental data

120
Q

What does SUPFS stand for?

A

Supportability Functional segment.

121
Q

What does TRAFS stand for?

What is it used for?

A

Torpedo Recognition and Alertment functional segment.

Alert sonar when senses a torpedo

122
Q

What does UCFS stand for?

What is it used for?

A

Undersea Warfare Control Functional Segment.

Firing VLA and torpedoes

123
Q

Undersea warfare consist of

A

Mine warfare, anti- submarine warfare

124
Q

What is the technical name for hull mounted sonar?

A

AN/SQS-53C

125
Q

What is run out other name?

A

Snake search

126
Q

What is no run out also called?

A

Circle search

127
Q

What is Gertrude real name?

A

AN/WQC-2A

128
Q

What gives depth beneath the keel?

A

UQN-4A

129
Q

What is NIXIE brevity code ?

A

Fanfare

130
Q

What company made Sonar Hull mounted?

A

BF Goodwrench

131
Q

What functional segment allows us to see when other ships or subs are using active sonar?

A

ACIFS (Acoustic Intercept Functional Segment)

132
Q

What functional segment gives us the status of our hull and towed array?

A

BFFS(Beam Forming Functional segment)

133
Q

What functional segment is used for hull passive sonar?

A

HPPFS (Hull Passive Processing Functional Segment)

134
Q

What functional segment uses to display hull active sonar?

A

MFAFS(Mid-Frequency Active Functional segment)

135
Q

What functional segment uses to display the info from MFTA?

A

PAFS(Passive Acoustic Functional Segment)

136
Q

What functional segment records what is on the sonar Suite consoles?

A

RECFS (Recorder Functional Segment)

137
Q

What function segment processes sonobuoy data?

A

Surface Common Airborne Undersea warfare sensor system functional Segment SCFS

138
Q

What functional segment gives environmental?

A

SPPFS (Sensor Performance Prediction Functional Segments)

139
Q

What functional segment is the central source of technical info and training info witchin the USW combat system?

A

SUPFS(Supportability Functional Segment)

140
Q

What functional segment uses to alert sonar when the system senses that a torpedo may be present?

A

TRAFS(Torpedo Recognition and Alertment Functional Segment)

141
Q

What functional segment uses to fire VLA’s and torpedoes?

A

UCFS(Undersea warfare Control functional segment)

142
Q

What type of data does XBT send ?

A

Temperature vs Depth

143
Q

What transducers so?

A

Convert acoustic energy to an electrical signal and also electrical signal into acoustic energy

144
Q

What does XBT give us after all data collected?

A

Sound speed profile

ESWS (15 decks)

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