Torpedoes explosions at the end of run

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marcelo_malara
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Torpedoes explosions at the end of run

Post by marcelo_malara » Wed May 12, 2021 3:03 pm

Hi guys. Do you know if any navy did have a specific policy about detonating the warhead at the end of run? Have heard this, but for example could not find the specific mechanism in (for example) the Mk14´s torpedo manual in the HNSA site .

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OpanaPointer
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Re: Torpedoes explosions at the end of run

Post by OpanaPointer » Wed May 12, 2021 7:11 pm

I know of a contact trigger, basically firing a charge into the warhead when the weapon hit the hull, and a magnetic exploder, one that noted the magnetic field of a ship and detonated under it. Degaussing was developed to neutralize the magnetic warheads. Civil war USN and CSN ships sometimes employed "spar torpedoes", where the charge was on the end of a pole and the ship rammed this into another ship. Obviously the aggressor was uncomfortably close to the explosion.

Steve Crandell
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Re: Torpedoes explosions at the end of run

Post by Steve Crandell » Wed May 12, 2021 8:10 pm

You'd think it would be desirable, but I'm not aware of one. I suppose one disadvantage is that an explosion usually means you've hit a ship, and self destruct would add a lot of extraneous explosions to a torpedo salvo and would definitely alert the enemy to your presence.

OpanaPointer
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Re: Torpedoes explosions at the end of run

Post by OpanaPointer » Wed May 12, 2021 11:50 pm

It might be possibly useful to avoid the legendary case where a sub sank itself.

If there's no explosion at the end of the time allowed would it be a good idea to eliminate the torp?

Mostlyharmless
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Re: Torpedoes explosions at the end of run

Post by Mostlyharmless » Sat May 15, 2021 3:39 pm

As noted there are two weaknesses of exploding torpedoes at the end of their run which is that damage to the enemy might be overestimated and that the enemy might gain information. Simply telling the torpedo to sink after some distance would seem to avoid both problems although a magnetic fused torpedo might be converted into a mine in shallow water.

The Japanese did tend to overestimate enemy damage during the Solomons Campaign because their inertial fused torpedoes sometimes exploded on passing through ship's wakes. They also experienced problems during the Battle of Sunda Strait https://en.wikipedia.org/wiki/Battle_of_Sunda_Strait when their Type 93 torpedoes ran far beyond their targets and sank or damaged five of their own Java Invasion Force, putting Lt. General Inamura into the sea. The next morning an IJN officer was sent to apologise but realised that General Inamura believed that his ship had been hit by an enemy torpedo and chose not to enlighten him.

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marcelo_malara
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Re: Torpedoes explosions at the end of run

Post by marcelo_malara » Sat May 15, 2021 4:45 pm

What would happen with the torpedo sinking at the end of the run? Would the collapse of the warhead because of the water pressure make it explode?

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Re: Torpedoes explosions at the end of run

Post by OpanaPointer » Sat May 15, 2021 7:09 pm

marcelo_malara wrote:
Sat May 15, 2021 4:45 pm
What would happen with the torpedo sinking at the end of the run? Would the collapse of the warhead because of the water pressure make it explode?
If the trigger mechanism hit something harder enough to se it off it would explode. If it nosed into mud it's less likely to do so. The collapse of the warhead, if that happened, shouldn't cause the detonation.

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