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0804 > Naval Weapons > Flashcards

Naval Weapons Flashcards

0
Q

What are the 4 classifications of Sea mines?

A

Case shape
Method of launch
Position of mine in the water
Method of firing

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1
Q

What does NEQ’s stand for?

A

Net explosive quantity

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2
Q

What are the 5 categories of Naval weapons?

A 
Sea mines
Torpedoes
Depth charges
Limpet mines 
Marine pyrotechnics
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3
Q

What are the 4 shapes of sea mines?

A

Spherical
Cylindrical
Capsular
Special

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4
Q

What are the 4 methods of launching sea mines?

A

Aircraft
Surface craft
Submarine
Hand

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5
Q

What are the 4 positions in water for sea mines?

A

Buoyant/moored
Ground/bottom
Drifting/oscillating
Very shallow water (VSW)

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6
Q

What are the 2 methods of firing sea mines?

A

Contact

Influence

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7
Q

What are the 4 methods of firing influence sea mines?

A

Magnetic
Acoustic/seismic
Pressure
Combination of all 3

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8
Q

What are the 7 types of contact sea mine firing systems?

A 
Galvanic
Chemical horn
Le clanche Horn
Hydrostatic horn
Impact inertia
Switch horn
Snag line
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9
Q

How many pounds of force is required to operate a switch horn?

A

7 pounds of force

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10
Q

What are the 5 different types of influence firing systems?

A 
Magnetic
Acoustic
Seismic
Pressure
Combination of any of the above
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11
Q

How is it possible to ID a magnetic firing system?

A

A large hexagonal nut may be present on older mines (coiled Rod unit)

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12
Q

At what distance from the mine do we need to be metal free?

A

25 m

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13
Q

What would a smooth rubber diaphragm indicate?

A

Acoustic or seismic firing system

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14
Q

What are the acoustic and seismic precautions regarding sea mines?

A

Cease all unnecessary noise within 25m

Use 1 in 3 rule within 10m of the sea mine

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15
Q

What are the safety precautions for depthcharges?

A

Approach side on as the sensors will be on the ends

16
Q

What does a gold metallic disc at the rear of the sea mine indicate?

A

Very sensitive magnetic and seismic firing device aka the golden arsehole

There will also be 4 white lines on the rear

17
Q

What are the 4 main parts to a torpedo?

A

Guidance
Warhead
Energy
Proportion

18
Q

What are the 2 key ID features for torpedoes?

A

Number of propellers

Number of blades

19
Q

What are the 4 classifications of torpedoes?

A

Launch
Proportion
Guidance
Firing

20
Q

What are the 5 methods of proportion for torpedoes?

A 
Air steam
Chemical air steam
Electric
Solid propellant
Liquid propellant (otto fuel)
21
Q

What are the 4 methods of firing a torpedo?

A

Impact
Impact inertia
Influence
Combination of the above

22
Q

What are the recce procedures for torpedoes?

A

Strip all metal off any ICP

Approach torpedo from the rear quarter and upwind if possible

At 25m eliminate all unnecessary noise

At 10m all movements are 1 in 3

After approaching a torpedo if proportion section is still warm back out it may still think it’s hunting a target

Take dimensions without touching the torpedo

Determine firing system if possible
Impact (whiskers)
Influence (no external features)

Propeller specs are key to ID i.e. number of props and blades per prop

23
Q

What are the arming and firing system for depthcharges?

A

Hydrostatic for both arming and firing are the most common

24
Q

What is the main safety precaution with depth charges?

A

Allow 1 full tidal cycles before approaching the depth charge if possible

25
Q

What are the 2 key features of limpet mines?

A

The most common firing device will be time

Most will incorporate anti-removal device

26
Q

What are the 6 method of attaching limpet mines?

A 
Magnetic (most common)
Clamps
Adhesive
Suction
Floats
Rope
27
Q

What is the most common firing method of a marine pyrotechnic?

A

Cocked striker

28
Q

What are the safety precautions for marine pyrotechnics?

A

Toxic fumes and gases may be given off allow a 30 minute soak

Always destroy in a upwards direction to allow contents to burn off

29
Q

What diameter of submarine launched torpedoes?

A

21 inches

30
Q

What must you always assume until you can rule out regarding naval weapons?

A

Influence means of initiation

0804 (16 decks)

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