SONAR Flashcards
1
Q
What are the two types of sonar?
A
Active
Passive
2
Q
What does sonar stand for?
A
Sound Navigation and ranging
3
Q
What does active sonar read?
A
Range and bearing
4
Q
What does passive sonar read?
A
Bearing. Listen only
5
Q
What is AN/SQS-53C?
A
Hull mounted sonar
6
Q
What type of sonar system is SQS-53C? What is the primary system?
A
Active and passive.
Primary: Active
7
Q
How much gallon and what type of water is in sonar dome?
A
26,000 fresh water
8
Q
What is the sonar dome pressurized with?
A
Fireman
9
Q
How many transducers are in SQS-53C?
A
576 (72 staves and 8 rows)
10
Q
If there is a dome casualty what must the ship do?
A
Slow down to 5 knots and head back to port
11
Q
What does MFTA stand for?
A
Multi Function Towed Array
12
Q
Is MFTA active or passive?
A
Passive
13
Q
How long is MFTA cable scope? And how much is deployed?
A
5,600 feet
5,200 feet deployed
14
Q
How long is MFTA array?
A
610 ft
15
Q
How long is MFTA drogue?
A
150 feet
16
Q
What stables the array as it travels thru the water?
A
The drogue
17
Q
How many MFTA modules are there?
A
7
18
Q
What is the array filled with?
A
ISOPAR
19
Q
What does ISOPAR do for the array?
A
Gives it neutral buoyancy
20
Q
What is MFTA deployment speed?
A
3-15 knots
21
Q
What is MFTA retrieval speed?
A
10-15 knots
22
Q
What is MFTA max tow speed?
A
32 knots
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
24
Q
What is SSQ-53 also called?
A
DIFAR (Pointer)
25
is DIFAR active or passive?
Passive
26
What is SSQ-62 also called?
DICASS (Cadillac)
27
Is DICASS Buoy active or passive?
Active
28
What is SSQ-77 also called?
VLAD (Totem pole)
29
Is VLAD active or passive?
Passive
30
What does DIFAR stand for?
Directional Low Frequency Analysis Recording
31
What does DICASS stand for?
Directional Command Activated Sonar System
32
What does VLAD stand for?
Vertical Line Array DIFAR
33
What system is sonar buoys used as?
Re-detection
34
What is the ARR-75?
How many buoys can process?
Line of sight receive only antenna
4 passive 1 active
35
How many buoys can the helio process through SQR-4 Via HAWKLINK?
8
36
How many sonarbuoys can the helio carry
25
37
What is a two-way encrypted data and voice comms from ship to helio and helio to ship?
HAWKLINK
38
What does Hawklink and SQR-4 increase for sonarbuoys processing?
RANGE
39
All info collected from sonar buoys is processed and displayed on what?
SCFS
40
What does SCFS stand for?
Surface common Airborne undersea warfare sensor system functional segment
41
What is MK 32?
Surface Vessel Torpedo Tube (SVTT)
42
Where are SVTT tubes located and how many on each side?
Port and STBD mid ships.
Three on each side
43
Is the SVTT a offensive or defensive weapon system?
Defensive
44
What kind of torpedoes can the MK 32 fire?
MK 46 and MK 54
45
What is the active range for AN/SQS-53C?
80,000 yards
46
What is AN/SQS-53C brevity code?
Lance Searcher
47
What is MFTA brevity code?
Serpant
48
What degree are MK 32 tubes pointed before firing?
45 degrees
49
What kind of air is used to fire the torpedoes?
HP air
50
What are the flask charged for the MK32?
1500-1600 psi
51
Where can the torpedoes be fired from?
CSER 3 annex, CIC, or locally at tubes
52
What is used to fire torpedoes in CSER 3 annex?
TSP(Torpedo Setting Panel)
53
What is used to fire the torpedoes in CIC?
UCFS
54
What is MK 41?
Where is it located at?
VLS (Vertical launching system)
Aft missile deck and forecastle
55
Where can MK 41 be fired from and using what?
CIC USING UCFS
56
What is MK 46?
Thermal torpedo
57
What are two modes of MK 46?
Run-out(snake search)
No run out (circle search)
58
How many pounds is the high explosive bulk charge warhead?
98 lbs of PBXN 103
59
What type of fuel does the MK 46 use?
Otto fuel 2
60
How does Otto fuel 2 keep burning?
Creates its own oxygen
61
What does Otto fuel smell like and what color is it?
Roasted almonds
Red-orange
62
Where is the spilled kit located for the Otto fuel?
Outside CCS
63
What type of torpedo is the MK 54 ?
Hybrid thermal torpedo
64
What is the min and max range for MK 46?
Min 3,500 yds
| Max 8,000 yds
65
How many pounds is the high explosive shaped charge warhead for MK 54?
64 lbs of PBXN110
66
What are the two modes of MK 54?
Directed(snake search)
NON DIRECTED (circle search)
67
What is the min and max range of the MK 54?
Min 3,500 yds
Max 8,000 yds
68
What does VLA stand for?
Vertical launch ASROC(anti submarine rocket)
69
What is the booster drop zone for VLA?
2,500- 5000 yds
70
What is the min and max range for VLA?
Min 3,000 yds
Max 18,000 yds
71
What is the brevity code for VLA?
Bassett
72
What are sonars air assets?
MH-60R
P-3 Orion
P-8 Poseidon
73
How many buoys can the MH-60R take off with and many can it return with?
Take off with 3 l
| Land with only 2
74
How many buoys can the MH-60R carry?
25
75
What type of weapon system is the MH-60R? Offensive or defensive
Offensive
76
How many buoys can the P-3 Orion carry?
84
77
What is the P-3 Orion?
Long range ASW aircraft that can assist the ship
78
How many buoys can the P-8 Poseidon carry?
120 buoys
79
What is the P-8 Poseidon and what can it do that the P-3 can't
Long range ASW aircraft. Can stay in the air longer than p-3
80
What is the AN/SLQ-25C other name?
NIXIE (fanfare)
81
What is nixie original name?
AN/SLQ-25c
82
What is nixie (AN/SLQ-25C) primary function?
Torpedo countermeasure.
83
What type of torpedoes does the nixie protect the ship from?
Acoustic-homing and wake homing torpedoes
84
How many towed bodies does the nixie have and what are the bodies called?
Where are they located?
Two towed bodies
FISH
Port and STBD side
85
How many feet is nixie cable scope?
2,100 feet
86
What is the max deployable length for nixie?
2,000 feet
87
How many feet does the nixie stay on the winch?
100 feet
88
What are the 6 modes for nixie?
```
Swept
Noise
Alternate
Pulse
Random
Broadband
```
89
What are the two sub modes for nixie?
Magnetic Influenced Countermeasure (MICM
Reactive Magnetic Countermeasure (RMC)
90
What does MICM stand for?
Magnetic influenced countermeasure
91
What does RMC stand for?
Reactive Magnetic Countermeasure
92
What is AN/WQC-2A brevity code?
Gertrude. Uncle joe on Gertrude
93
What does AN/WQC-2A do?
Provides two way unencrypted voice communications
Example: ship to ship, ship to sub, sub to sub
94
Where is unit 3 of AN/WQC-2A located?
Sonar 2
95
Where is unit 2 of AN/WQC-2A located?
Bridge
96
What is AN/WQC-6 brevity code?
Probe alert
97
What does AN/WQC-6 provide?
One way encrypted communications
Example: ship to sub
98
What does AN/UQN-4A provide?
Provides depth beneath the keel
99
What does AN/UQN-4A calculated and how?
Calculates depth by sending out small active sonar transmissions
100
How many and where are AN/UQN-4A repeaters?
3
Located in CIC, Bridge, Chart room
101
Sound speed is how many feet per second underwater?
5000 fps
102
Sound speed helps determine what thru the water?
Propagates (moves)
103
How many factors effects sound speed? And what are they?
3
Temperature
Salinity
Pressure
104
What type of probe is XBT?
Temperature probe
105
What does XBT stand for?
Expendable Bathythermograph
106
How many feet does the XBT fall?
| And how long does it take it to fall
1500 ft in 90 sec
107
What does the front probe of the XBT do?
Measure resistance
108
All the data collected by the XBT gives a what?
Sound speed profile
109
What is Snell's law?
Sound goes in the path least resistant
110
What does PMAP stand for?
Protective Measures Assessment Protocol
111
What is PMAP used for?
Used for going active or doing gun shoots to help protect marine life
112
How many functional segments does the AN/SQQ89A (v) have?
15
113
What does ACIFS stand for?
What does it do?
Acoustic Intercept Functional Segment
Allows us to see when other ships or subs are using active sonar
114
What does BFFS stand for?
| What is it used for?
Beam Forming Functional Segment
Gives us Status of our hull and towed array
115
What does HPPFS stand for?
What is used for?
Hull passive processing functional segment.
Used for hull passive sonar
116
What does MFAFS stand for?
What is it used for?
Mid-Frequency Active Functional Segment.
Used to display hull active sonar
117
What does PAFS stand for?
What is it used for?
Passive acoustic functional segment
Used to display the info from MFTA
118
What does RECFS stand for?
What is it used for?
Recorder Functional segment.
Used to record what is on the sonar suite consoles
119
What does SPPFS stand for?
What is it used for?
Sensor performance prediction functional segment.
Used to give environmental data
120
What does SUPFS stand for?
Supportability Functional segment.
121
What does TRAFS stand for?
What is it used for?
Torpedo Recognition and Alertment functional segment.
Alert sonar when senses a torpedo
122
What does UCFS stand for?
What is it used for?
Undersea Warfare Control Functional Segment.
Firing VLA and torpedoes
123
Undersea warfare consist of
Mine warfare, anti- submarine warfare
124
What is the technical name for hull mounted sonar?
AN/SQS-53C
125
What is run out other name?
Snake search
126
What is no run out also called?
Circle search
127
What is Gertrude real name?
AN/WQC-2A
128
What gives depth beneath the keel?
UQN-4A
129
What is NIXIE brevity code ?
Fanfare
130
What company made Sonar Hull mounted?
BF Goodwrench
131
What functional segment allows us to see when other ships or subs are using active sonar?
ACIFS (Acoustic Intercept Functional Segment)
132
What functional segment gives us the status of our hull and towed array?
BFFS(Beam Forming Functional segment)
133
What functional segment is used for hull passive sonar?
HPPFS (Hull Passive Processing Functional Segment)
134
What functional segment uses to display hull active sonar?
MFAFS(Mid-Frequency Active Functional segment)
135
What functional segment uses to display the info from MFTA?
PAFS(Passive Acoustic Functional Segment)
136
What functional segment records what is on the sonar Suite consoles?
RECFS (Recorder Functional Segment)
137
What function segment processes sonobuoy data?
Surface Common Airborne Undersea warfare sensor system functional Segment SCFS
138
What functional segment gives environmental?
SPPFS (Sensor Performance Prediction Functional Segments)
139
What functional segment is the central source of technical info and training info witchin the USW combat system?
SUPFS(Supportability Functional Segment)
140
What functional segment uses to alert sonar when the system senses that a torpedo may be present?
TRAFS(Torpedo Recognition and Alertment Functional Segment)
141
What functional segment uses to fire VLA's and torpedoes?
UCFS(Undersea warfare Control functional segment)
142
What type of data does XBT send ?
Temperature vs Depth
143
What transducers so?
Convert acoustic energy to an electrical signal and also electrical signal into acoustic energy
144
What does XBT give us after all data collected?
Sound speed profile
