Underwater targeting

Question 1

what components make up FCS?

Answer 1

Fire control system
- Bearing
- Range
- Course
- speed
- Depth (if in submarines)
- time (only relevant to a point in time)

Question 2

Why is underwater targeting usually more difficult than above water?

Answer 2

there is no dedicated fire control sensor
- The same sensors for long range detection must also be used for localising a target

Question 3

what methods can be used to determine the range of a contact from a submarine?

Answer 3

Visual ranging
- periscope depth

Active Sonar
- Accurate range but immediately detected

Passive Sonar ranging
- triangulation
- Vertical direct passive ranging
- Horizontal direct passive ranging

TMA processes

Question 4

what is meant by tactical offset?

Answer 4

Releasing a torpedo ahead of a target track

Allows torpedo time to :
- Enter the water
- Flood the battery and initiate power
- Start the engine
- Conduct manoeuvers to ensure control

Question 5

what is TUA and why is it needed?

Answer 5

Target uncertainty area
- The area of the ocean, you believe the target is in
- elliptical as more certainty in the bearing than the range