How can someone avoid a Torpedo Attack?

[Penguin]

How about submerged lasers ? do these babies work under water as accurately as they do above sea level ?

At this time, mostly for communications, imaging/detection and building (welding).
Re: Do Lasers Work Underwater?
BBC NEWS | Technology | Underwater laser pops in navy ops
http://www.fau.edu/hboi/files/PressReleases/HBOIFAU_DalglieshFederalAward_062909.pdf
http://www.freepatentsonline.com/6060686.html

 

[Penguin]

till know defence industry have failled to produce something against torpedo which is ausum if it hits targets it stays hit and impossible to repair as well

This is simply not true. The Nixie decoy and Prairie-Masker systems are examples. However, these work only against certain types of torpedo guidance systems.

As for possibilities to survie torpedo attack: just google the words torpedo and damage and look for some of the images. Depending on where hit, a ship might loose a bow or stern section but crews still managed to keep the remainder of the vessel affloat for salvage and repair.

For an example of a small ship surviving a torpedo hit see e.g. HyperWar: USS Fogg (DE-57)

For a larger ship example see Ship Photographs of HMS Nigeria

When you look at sinkex/hulkex pics, keep in mind that a) the sub can get into perfect position for a killshot undisturbed and b) there is no active damage control going on aboard the target vessel after it's been hit. Those are two things likely to be different during a real combat situation.

 

[mjnaushad]

The most easy way to avoid torpedo attack is

Dont participate in a war.

On a serious note i think it should be something like iron fist tech. When you spot a torpedo fire something at it to destroy it in middle.

 

[no_name]

How about submerged lasers ? do these babies work under water as accurately as they do above sea level ?

Highly unlikely. A few reason on the spot:

1) salt water is a electrical conductor. Conductors attenuate EM fields. Light is a EM field. The higher the frequency of EM field the larger the attenuation per unit dist.

2) water is a very good heat conductor. obviously not good for laser. Complicated by the fact that you will boil water and the bubbles will be noisy/disruptive

3) Much severe scattering effect under water because it is a denser medium

4)Range reduced even if all above not counted as light travels slower in dense medium, taking longer to travel the same dist and loses more energy.

5)Water density changes with depth, this is much more problematic compared to air because density of water is greater. The light will travel in a curved line because of gradual change in refractive index with depth. (this is partly why they need to fire a test laser for calibration)


regards,

 

[Kinetic]

Decoys, EW, anti-torpedo torpedo etc etc.

 

[fatman17]

better yet - stay on land !!!