Chinese name: Dolby class patrol submarine

The total length is 6 1m and the draft is 5.5m

Country: Brazil

Width: 6.2m

Displacement: 1.260 tons, latent state: 1.440 tons.

Equipment: 8 533mm torpedo tubes, Marconi Mk24 Tiger Fish Mod 1 Torpedo 16.

Main engine: 4 diesel engines, 1 motor (5000 HP), single shaft, floating speed 1 1 knot, submersible speed 2 1.5 knot.

Dolby-class patrol submarines use-

In order to ensure the security of the North Atlantic Treaty Organization, Norway must have a small but powerful submarine force. In the late 1950s, most of the existing submarines were out of date, so it was necessary to build new submarines. The United States decided to pay half of the funds for this project, and the formal development plan was carried out in West Germany.

Although this class submarine is small, it has excellent combat and attack capabilities, so Norway signed a construction contract with West Germany for 15, all of which were built by Germany. These are class 207 submarines. All 65,438+05 ships were built by Rhine Steel Beihai Shipyard in Nden. The factory adopts precast segmental structure system, and the hull is divided into several parts to be manufactured separately, which greatly shortens the construction time. Sometimes it takes four months to complete a ship.

Characteristics of Dolby-class patrol submarines-

The displacement of this class submarine must exceed 1000 tons, and the total length should be limited to 179 feet (54 meters), so as to carry out the inshore patrol mission. Submarine performance is the first, so the boat has a smooth hull and a huge submarine capability system, with a maximum speed of 22 knots. According to the standards at that time, it was the fastest submarine in the world and was called Class 209.

Brazil ordered an extended model of this class, with the floating displacement increased to 1.260 tons, and the power system consisted of four MTU 12-v 493-a 280 BF diesel engines and 1 Siemens motors, 1 blades. The maximum floating speed 1 1 knots, endurance of 8 knots/15580 km, and submarine endurance of 4 knots /760 km.

The development history of Dolby class patrol submarine-

The fire control system is the Flanty Caves AIOz operational data automation system and Sperry Mk29 inertial navigation, and the sonar is Krupp Atlas CSU-83/ 1 active/passive hull search attack sonar. The first Dolby of this class was built at Howard Swire-Deutschland Weaver Shipyard in March 1985, launched in April 1987 and completed in February 1988.

The second and third Tambok (S3 1 Tamboig) and Thibila (S32 Timbira) were built by the Kelha Naval Factory in Rio de Janeiro, and were in service from 1992 to 1993. The fourth tower pazos has not yet started construction. Initially, it was planned to build six ships, but due to the delay of the project, this goal seems difficult to achieve.