8.11 Anti-Submarine Warfare

Question 1

Necessary components for sound transmission

Answer 1

Source
Medium
Receiver

Question 2

Factors Affecting Sound Speed

Answer 2

Temperature
-Has greatest affect on speed
Salinity
Pressure (Depth)

Increase will yield an increase in sound speed

Question 3

Propagation Loss

Answer 3

The difference between sound at the source and sound received.

Spreading
Absorption
Scattering
Bottom Loss

Question 4

Ambient Noise

Answer 4

Noise that is present in the ocean

Hydrodynamics
Seismic activity
Biologics
Ocean Traffic

Question 5

Expendable Bathythermograph (XBT)

Answer 5

Ocean sampling tool

Data collected is input to ocean modeling system

Question 6

Different Propagation Paths

Answer 6

Direct Path
Surface Duct
Sound Channel
Bottom Bounce
Convergence Zone

Question 7

Modes of SONAR

Answer 7

Passive
Active
Broadband v. Narrowband

Question 8

Target Motion Analysis (TMA)

Answer 8

Analyzing changes in bearing and frequency of contact over time

Question 9

External (CSG/ESG) ASW Organization

Answer 9

CWC
ASWC
HEC
Submarine Ops Coordinating Authority (SOCA)
Search and Attach Unit (SAU)
Search and Attack Unit (SAUC) Commander
Scene of Action Commander (SAC)

Question 10

ASW Operational Battlespace terms

Answer 10

Datum
Datum Error
Furthest On Circle (FOC)
Torpedo Danger Area/Weapons Engagement Zone (TDA/WEZ)
Torpedo Danger Zone (TDZ)

Question 11

ASW Aircraft assets

Answer 11

MH-60R Seahawk
P-8 Poseidon

Question 12

ASW Surface assets

Answer 12

Any and all Surface units

Question 13

ASW Submarine assets

Answer 13

SSNs

Question 14

Passive SONAR advantages

Answer 14

Covert
Long detection ranges

Question 15

Passive SONAR disadvantages

Answer 15

Bearing error
Lengthy TMA

Question 16

Active SONAR advantages

Answer 16

Good against diesel threats
Ideal for localization

Question 17

Active SONAR disadvantages

Answer 17

Extremely overt
False targets
Gives away own ship position and type

Question 18

OOD/CICWO Considerations

Answer 18

Towing restrictions
Weather
TMA leg changes
Operating in a Screen formation

Question 19

ASW Surface advantages

Answer 19

Endurance and Payload
Extensive comms. Suite and processing capabilities

Question 20

ASW Surface disadvantages

Answer 20

Loud
Operate in areas of high ambient noise
Vulnerable to submarine attack

Question 21

ASW aircraft advantages

Answer 21

Standoff attack/invulnerable to submarine attack
Extended range and rapid deployment
Minimal time for reload and refuel

Question 22

ASW aircraft disadvantages

Answer 22

Range may be limited
Time on station may be limited depending on range
Helicopters are limited in processing capabilities

Question 23

Shipboard Procedures that affect ASW

Answer 23

Cavitation
Cavitation Speed
Optimum SONAR Speed
Shipboard Noise Sources
Noise Mitigation

Question 24

Waterspace Management

Answer 24

Procedures intended to prevent inadvertent attacks on friendly submarines

Question 25

Shipboard Torpedo Counter measures

Answer 25

Maneuvers
Acoustic Device CM (ADC)
AN/SLQ-25 NIXIE

Question 26

ASW Operational Battlespace

Answer 26