and “717 project” can carry 10 amphibious tanks and 10 wheeled armored vehicles, with up to 800 soldiers. According to the declassified files, the design of the “717 project” was completed in 1971, approved in March of the next year, and approved to build five ships in the North Machinery Plant.

the former Soviet Union secretly built a “troop carrying submarine” to attack the United States. On a dark night, a huge submarine floated on the sea off the east coast of the United States and approached the coast. On both sides of the submarine, there were big black openings, and tanks, armored vehicles and a large number of soldiers swarmed out. The U.S. National Guard, which is responsible for domestic defense, cannot stop these elite troops covered by armored vehicles. Within hours, the organized resistance of the U.S. military on the east coast collapsed. The armored Raider went straight to destroy the Pentagon, the White House and Capitol Hill.

the above plot appeared in the transatlantic blitz plan planned by the general staff of the former Soviet Union. In order to implement the plan, the former Soviet Union not only fully developed super large transport submarines, but also secretly trained special forces that could endure long-term underwater diving.

spend too much money to dismount

talking about submarine troop transportation, the Soviet Navy has experienced it in the bloody storm of World War II. In the autumn of 1941, the German army broke through the Soviet defense line in the northern Crimean Peninsula, and about 110000 Soviet soldiers and civilians were trapped in the isolated city of Sevastopol. Because the German army controlled the air, the Soviet Black Sea fleet had to use submarines as “underwater buses” to transport weapons, grain and ammunition into Sevastopol.




instructed relevant departments to develop special transport submarines according to the experience of Fortress defense war. At the end of 1942, a transport submarine scheme called “607 project” was put on Stalin’s desk. It can carry 250 ~ 300 tons of goods and 110 tons of gasoline in four ballast tanks. However, with the change of the Soviet German war situation, the Soviet Army no longer needed this kind of underwater transportation. After the war of




, Stalin launched an upsurge of “great navy” construction, and transport submarines were put on the agenda again. In 1948, the 18th Central Design Bureau proposed the “621 project”. In the “belly” of this behemoth, there are two decks for parking vehicles, which can carry an infantry battalion (745 people), plus 10 medium tanks, 12 trucks or 3 fighter planes. After arriving at the destination, infantry and vehicles are unloaded through the springboard, while fighter planes take off through catapults. This design was favored by the Kremlin and entered the stage of engineering demonstration.

in 1953, Stalin died, and Khrushchev, the new leader, felt that the “621 project” cost too much and forced him to dismount.

“664 project” died prematurely

the Soviet Navy’s attention to transport submarines did not end due to the failure of the “621 project”. In the early 1960s, the Soviet Navy was at an overall disadvantage in the confrontation with the US Navy, and the Soviet surface fleet could not approach the US Coast at all. Marshal Malinowski, who was then the defense minister of the Soviet Union, proposed to develop a more subversive “large-scale nuclear powered transport landing submarine” to sneak close to the US Coast and raid important cities when necessary.

later, the Soviet Navy General command sent the 18th central design bureau again, and the development project code was “project 648”. According to Dr. shmakov, who participated in relevant work in that year, in order to meet the minimum standards of the superior for submarine troop transportation, the design team had to simplify the living supporting facilities as much as possible (the number of toilets was reduced from 16 to 4, and 2 people slept in each hammock). “After the design is completed, we all laugh at ourselves – whoever is willing to go to war in this submarine is using himself as an animal,” shmakov said In October 1960, the “648 project” took out all the drawings, but due to the great difficulty of manufacturing, all shipyards in the Soviet Union refused to build, and finally the Northern Machinery Factory was forced to undertake the task. At that time, the Northern Machinery Factory had only two slipways to build large tonnage submarines. When Khrushchev inspected the plant in 1961, Changsha boylov asked Khrushchev: “whether the Navy wants strategic missile nuclear submarines or underwater landing ships, we can only complete the same thing, otherwise we will achieve nothing.” Khrushchev finally took a fancy to the strategic missile nuclear submarine, so the “648 project” announced to dismount.

but the Soviet Union’s efforts to seek underwater transport submarines did not stop, and the 18th central design bureau put forward a bolder “664 project” in 1965. When the design blueprint was sent to the North Machinery Factory again, the factory leaders shook their heads with worry because they couldn’t build such a submarine at all.

although the efforts to build underwater transport submarines were frustrated, the Soviet Union’s preparations for the formation of surprise troops never stopped. In 1961, the Soviet Army decided to establish a special force for cross ocean assault, selected 550 officers and soldiers, and established the 27th special battalion, which was specially sent to the Baltic port of kouliepaya for submarine attack training. There are many strange criteria in the selection process. For example, the soldier’s height should not exceed 170 cm, which is suitable for drilling around in the submarine. Therefore, the army is jokingly called “mouse camp”.

“underwater monster” dystocia

after Brezhnev came to power, the Soviet military thought changed and the underwater Transport Submarine plan was reborn. In 1967, the Soviet Union started the research and development of a new generation of large transport nuclear submarine, with the project code “project 717”. The nuclear submarine is 190 meters long and 23 meters wide, with a standard displacement of 17600 tons and an underwater speed of 17 ~ 18 knots. The upper part of the bow is equipped with 6 torpedo launching tubes, and 2 lifting 6-Tube mechanism guns with a diameter of 30mm are also installed in front of and behind the command tower. The “717 project” can carry 10 amphibious tanks and 10 wheeled armored vehicles, with up to 800 soldiers. According to the declassified files, the design of the “717 project” was completed in 1971, approved in March of the next year, and approved to build five ships in the North Machinery Plant. Seeing that decades of hard work was about to bear fruit, the international environment at that time still could not tolerate the birth of these “underwater monsters”. In the 1970s, the United States developed a trident submarine launched missile that can carry 12 nuclear warheads. Each “Ohio” class nuclear submarine carrying this missile can