Midget submarines and new kind of communication technology would revolutionize scientific and military operations.

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Kimmo Huosionmaa

Infrasound is the fascinating thing, It can be used for many purposes, and one of them is underwater communication technology. In this technology, the modified SONAR systems are used for communicating with small drone-submarines. Those systems allow operating inside the caves and shipwrecks by using remote-controlled miniature submarines.


That system is actually very similar, what was used to take fascinating pictures inside of shipwreck of ocean liner R.M.S Titanic. That system, what was used to take original pictures of that ocean liners inner space was used wires to communicate small Jason robot and Alvin submarine. But there is many limits in this kind of system, what uses cables to control that robot. The modified sonar system, what is used to communicate with modern midget submarines is actually the same kind of underwater telephone, what is used to communication between naval vessels. In this system would the modem just being installed to that underwater telephone.


Underwater modem system would use also LRAD-equipment, what makes possible to send the sound to the drone by using the very thin beam of the voice. Underwater modems are basically same, what are used in 1980's and 1990's. But modern technology makes them faster. If we are talking about scientific drones, what are used to search inside space of shipwrecks, they can also equipped with inertial or gyroscope navigation system, what allows them to record the route, and if the SONAR-communication would cut, the drone would drive it's route back to the point, where it takes the contact. Those systems can also make the train, where those drones would use together as the relay drones, what allows them to operate in very complicated spaces.


There is one big benefit for voice communication compared with LASER-based systems. Lasers need visual contact between transmitters, and if this drone would land behind something, what denies the are contact between transmitters would the communication shut down. When we are talking about military versions of that kind of equipment, we can imagine the small size submarine, what is following some ship below it.


In this scenario the nuclear powered miniature submarine, what could actually be like U.S Navy's Swimmer Delivery Vehicle, but it can be powered by RTG or radio thermal generator, but they can also use conventional power sources like power cells. In those situations, the most effective fuel for those power cells is hydrogen, because it keeps the electrodes clean. That submarine can be carried torpedoes or small submarine launch missiles, and it can be operated from nuclear submarines or surface warships. That submarine can also use to operate with combat scuba diving missions because those torpedoes can be installed outboard its hull.


Deep dived drones can re-arm by using similar CURV or controlled underwater recovery vehicle drone submarines, what are using in underwater rescue missions. So in this kind of cases, the drone can be called in the certain point to the ocean, and then combat diving team would get those men for the mission. Those miniature drone-submarines can deliver to operation from other submarines, they could travel to target independently, or they can drop from airplanes like C-5 or C-130. Or even shoot by rockets from space-centers. In the last case the is like Atlas would carry the drone by Earths orbiter, and then it would land like spacecraft and it can be equipped with thermal shield and parachutes.


Space delivery systems would be useful in the cases where need extremely fast reactions, like submarine accidents, where is needed extreme fast reaction to secure the wreck and it's top secret communication and other systems. Those drones can also use for intelligence missions to harbors. Underwater robots can also operate from ground stations, by using communication buoys. Those buoys can deliver from the satellites, and then the satellite can use that buoy as the relay-station for communication. Then the submarine can collect it from the sea because that would deny that equipment getting to unauthorized hands.

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The human torpedo can be very dangerous equipment

British "Chariot" vehicle
(Picture 1)

Kimmo Huosionmaa

The ”human torpedo” is one of the most extreme things in naval warfare. That is actually the electric-powered torpedo-shaped vehicle, what can be used to carry explosives or other equipment to the coastal area. Japanese fleet had suicide-torpedo called ”Kaiten”, but this device is not very common in other navies. German navy had so-called ”Neger”-torpedo, what was equipped with the cabin, and it had one torpedo for shooting the ships, what is moving forward. The British version of those underwater ”motorbikes” was the ”chariot”.


In this version was normally two scuba divers, who sat on the torpedo. And this equipment was used against axis ships in Mediterranean area. Similar vehicles were used in the attack against British battleships at Alexandria by Italian naval frogmen. This attack shows how dangerous those things were, and when we are thinking about this kind of attack, the human torpedoes can be carried to harbors by using any vessel, like trawlers or they can trail by civilian shaped speedboats.

German "Neger" midget submarine
with parasite torpedo
(Picture 2)

The Chariot-type vehicle has the nose section, what can be separated, and that nose section might fill with explosives. So those vehicles can slip in the harbors, and the installation of those explosives is very easy. That happened in the Alexandria harbor, where two British battleships were damaged in 1941. The reason why those ships were not sunk, was that they laid on the bottom of the harbor, and this shows how dangerous those vehicles might be.


The big losses of the "Neger" system, was probably might caused by because the divers were not used scuba equipment and if the torpedo were launched too close the explosion, would destroy it immediately. I don't know did those men used the pressure air cylinders in that submarine, but if the torpedo were exploded too close, would that cause immediate death, and of course, allied forces dropped depth charges to water, and if the submarine would destroy in deep, that pilot would not able to get to surface without scuba. And if they were tired, the torpedoes would launch too close with terrible consequences.

There is the possibility that some British human torpedoes were equipped with launching torpedoes, what was installed at the bottom of the vehicle. The crew of this weapon might use the shields and metal west to protect them against pressure wave, what the exploding torpedo causes. Also, those frogmen tried sometimes to put the explosives at the hull of the submarine. But were those attempts successful is not confirmed.

(Picture 3)

In 1945 the German U-boat U-861 what carried the weapon drawings and other stuff was torpedoed by the British submarine. This case was the first time in history when submarine hits to another submarine with the torpedo when the target was given. It is suspicious that this U-boat was sunk by naval scuba divers, who use ”Chariot” vehicles. In modern day, we must remember that those electric powered manned torpedoes can be dangerous for other submarines.


It the scuba divers wait just after harbor or in the place, where submarine must drive slow, they can put the explosives to the hull of that submarine. Or of course those ”human torpedoes” can be very fast, and the divers can put the HEAT (High Explosive Anti Tank) explosive on the hull of the submarine. They can also use sub-torpedo against that target, and this could be an effective way to destroy the missile submarines.

Sources:

https://en.wikipedia.org/wiki/Raid_on_Alexandria_(1941)

https://en.wikipedia.org/wiki/Neger

http://www.hisutton.com/Chariot_Mk2.html

http://warfarehistorynetwork.com/daily/wwii/manned-submarines-italys-daredevil-torpedo-riders/

https://en.wikipedia.org/wiki/Operation_Caesar

Picture 1.

http://farm7.staticflickr.com/6210/6134365476_4481234aef_b.jpg

Picture 2.

https://i.pinimg.com/originals/89/56/87/8956874902b2cd3b5a27dcb07d20e19a.jpg

Picture 3.

http://warfarehistorynetwork.com/wp-content/uploads/Italy%E2%80%99s-Daredevil-Torpedo-Riders-7.jpg

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