A film about a diving technical school in the Crimea. View of the Balaklava Bay. The building of the technical school for training divers. Cadets in the classroom for theoretical lessons. Cadets are tested in a pressurized chamber before descending under water. Cadets on a boat swim up to the place of their practical work - the sunken Greek ship "Ocean". The bow of the "Ocean" ship is above the water. Senior diving instructor FK Kondyuk gives commands to the cadets (synchronously). The cadet puts on a diving suit and goes under the water. A diver moves along the deck of a sunken ship, inspects the ship (underwater filming). The diver climbs the boat ladder. The deep-sea vehicle is submerged in water. The chief specialist of EPRON (Special Purpose Underwater Expedition) M. Borisov tells the cadets how to operate the apparatus (synchronously). The ceremonial formation of the graduates of the technical school; the head of the technical school talks about EPRON (synchronously). Lifting of vessels "Capelin" in the Barents Sea, "Yamal" in the White Sea, "Kolyvan" in the Baltic Sea.