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norththe Lisbon Naval Base, about 100 soldiers from the subsurface da Armada participated in the “Escapex20” free ascension training, among the submersible’s garrison, the lifeboat divers, doctors and nurses and other support personnel.
In front of the Tagus river basin were the tent of the command center for the control of operations, the tent of the field infirmary and the important chambertimes hyperbaric portable, designed to treat “diver’s illness” (decompression too fast).
Each one of divers who simulated the flight of the ship had to enter a antecatimes from the Trident, which then flooded before opening the hatch, towards the surface.
Presumably unconscious, due to the rapid ascent, arrived Second Sergeant Santos Carrilho, picked up on a stretcher and transported to dry land, still in the waterproof suit and insufferable, orange, a kind of human raft that can withstand up to 19 atmospheres of hydrostatic pressure (180 meters).
“I am happy, a unique experience. I had already done it in Spain (10-meter free escape tower, in Cartagena) in a more controlled environment. So, give a little more pressure. The space is much more closed, here the Water It is at eye level. It is more difficult, but closer to reality, “he reported, after leaving the bow submerged and traveling” three meters “to the end. our, “in two seconds”.
Captain-Lieutenant Diogo Cavalheiro, a doctor, said that it was always a “very complex” situation due to the problems of “location and communication with the submarine” and, later, the “rescue, clinical evaluation and treatment of the divers“.
“Potentially, if nothing is done and there is no adequate medical support, it can be fatal. That is why we have this structure because if there is a quick treatment, that is, a recompression na câtimes hyperbaric On the spot, quickly, we managed to avoid this risk and avoid consequences for the future of our army, “he said, explaining that the unusual rises produce” bubbles in several organs of the human body “.
In November In 2017, the Argentine submarine San Juan sank after explosions, between Ushuaia and Mar del The pay, with 44 crew members. Only a year later it was located, 907 meters deep.
20 years ago, the Russian nuclear submarine Kursk it also sank in the Barents Sea, after the record of explosions, with a crew of 118 men, but at a shallow depth of 108 meters.
“The operation with submarines is always based on risk, which is maximized by the characteristics of the ship: low acoustic, visual and thermal signature, which makes it difficult to detected and enhances collisions at height periscope, with contacts with surface ships “, described the captain of the frigate Amaral Henriques, adding that” the Water it is a hostile and typically opaque medium. “
According to Amaral Henriques, “this submarine rescue exercise is one of the most important that has been carried out because it enhances a set of training and assessment in various areas that has never been done until now. “
“It allows training the entire support chain inherent in the rescue of submarines and wounded personnel. It allows the training of the garrison with the rescue team itself on board, so that the military, individually, can carry out the abandonment procedures. [do navio], allows testing and evaluating the entire command and control organization and coordination structure, as well as action doctor, who will work to maximize the survival of the military as soon as he gets here, “he said.
The Tridente and the other Portuguese submarine, Arpão, have a total length of 67.79 meters and a height (from the keel to the top of the tower) of 13 meters, with autonomy of 50 days at sea. The ship weighs 2,180 tons, can “dive” up to more than 300 meters and reaches a speed of 20 knots (37 km / h) in submergence.
These U-209PN, manufactured by the German company Howaldtswerke Deutsche shipyard GmbH (HDW) work with two generators AIP Siemens Sinavy (BZM-120), two diesel engines MTU 16V396 TB-94 and an engine electric Siemens excuse me, containing a launch system for six Harpoon missiles UGM 84 and 12 torpedoes.
The Portuguese state decided to buy new submarines in 1998, while the socialist António Guterres headed its first government. However, the order for the two ships was only formalized in 2004, already with the government coalition PSD/CDS-PP in power, first with José Manuel Barroso and then with Santana Lopes.
The Christian democrat Paulo Portas was Minister of State and National Defense and, later, of Maritime Affairs. The submarines were to be delivered in 2009 and 2010 and the business generated controversy years later, under suspicion of corruption, also involving the Espírito Santo group.
At the time, the two ships cost Portugal 840 million euros, but some delays caused the total budget to increase to more than 1 billion euros, not including maintenance costs. In turn, the German consortium would provide counterparts of around 1,210 million euros.
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