The "Hawaii" is currently the most advanced nuclear submarine in the world. It has greatly improved the combat capabilities of the U.S. Navy. The emergence of the "Hawaii" enabled the U.S. submarine navy to occupy a "world dominant position."

The "Hawaii" is the third of the "Virginia" class nuclear-powered attack submarines of the US Navy. It was jointly built by General Dynamics and Northrop Grumman. Northrop Grumman is responsible for the construction of the bow, stern, submarine command platform enclosure and other parts of the submarine, while General Dynamics is responsible for the construction of the hull, engine room, command and control systems and other parts.

The "Virginia" class submarines are the latest submarines built by the U.S. Navy after the end of the Cold War. They will provide the U.S. Navy with the capabilities it needs to meet the threats and challenges it faces in the 21st century; they have the capabilities of stealth and advanced surveillance. capabilities, and especially enhanced special warfare capabilities to meet the multi-mission requirements of the US Navy.

Virginia-class submarines can launch Tomahawk cruise missiles with extremely high accuracy, allowing them to attack targets on shore; they can also attack land, coastal waters, or other maritime forces. Long-term covert surveillance activities. In addition to attack and surveillance capabilities, they also have anti-submarine and anti-ship warfare capabilities, provide delivery and support capabilities for special forces, and engage in minelaying and minefield terrain mapping activities. With enhanced communications capabilities, they can also be integrated with carrier strike group operations to provide critical support to battle groups and joint task forces.

The "Hawaii" submarine has an underwater displacement of up to 7,800 tons, a length of 116.8 meters, a maximum underwater speed of 34 knots, a crew of 134 people, and a maximum diving depth of about 500 meters. Russian AK-class attack nuclear submarine

This class of submarine was designed by Malachite Design Bureau. The first seven ships are AKI-class, "Nelpa", "Cheetah" and "Viper" are AKII-class, and the rest are AKI-class improved models. There are 16 ships built or under construction, two of which have been decommissioned and one has been dismantled at the Qingcheng Shipyard of China before completion. The last two are currently under construction slowly at the Severodvinsk shipyard and may never be completed.

This class of boat has a particularly obvious long horizontal rudder, the same wide hull as the S-class boat, and the radiated sound level is reduced compared with the VⅢ class. The VⅢ class is based on conventional designed.

On later AK-class boats, some protruding non-acoustic sensors appeared on the guide edge of the horizontal rudder and on the front hull. These sensors are similar to the equipment tested on the HII level in the early 1980s. The engineering standards of the bridge and hull are significantly higher than the quality required for other classes.

This class of boats has been continuously improved by reducing noise levels, suppressing boundary layers and eliminating active noise. After the hull was improved, 6 external torpedo launch tubes were added, and the AK II stage was lengthened by 3.7m to further reduce noise. The diving depth is 450m.

This class of boats is equipped with the "Lively Spring" satellite communication system. ***This class of boats built by Qingcheng Shipyard is in service with the Pacific Fleet. The first one was decommissioned in 1996, and the second one was decommissioned in 1997.

The total length of this class of boats is 110 meters, the waterline length is 103 meters, the width is 14 meters, and the draft is 10.4 meters; the surface displacement is 7,500 tons, and the underwater displacement is 9,100 tons (AKⅡ is 9,500 tons); the underwater speed is 28 knots, and the surface displacement is 9,100 tons. 10 sections; personnel strength: 62 (31 officers).

Power plant: nuclear power, 1 VM-5 pressurized water reactor of 190 MW, 2 GT3A steam turbines, power 35 MW; 2 emergency propulsion motors, power 552 kW, single shaft; 2 thrust generator, power 740 kilowatts.

Missile: Rainbow Design Bureau SS-N-21 "Sampson" ("Garnet") submarine-launched cruise missile, launched from a 533mm torpedo tube, attacks land targets, inertial terrain tracking, A nuclear warhead with a range of 3,000 kilometers and a yield of 200 kilotons has a circular probability error of 150 meters and flies at an altitude of about 200 meters. In due course, it will be loaded with the "Alpha" SS-N-27 submarine-launched cruise missile.

SA-N-5/8 "Arrow" portable anti-aircraft missile launcher, 18 missiles.

The SS-N-15 "Starfish" anti-submarine missile is launched from a 530mm torpedo launch tube, with an inertial flight distance of 45 kilometers. The warhead is a 200-kiloton nuclear warhead or a Type 40 torpedo.

The SS-N-16 "Stallion" anti-submarine missile is launched from a 650mm torpedo launch tube, has an inertial flight distance of 100 kilometers, and has a warhead with a 200-kiloton equivalent nuclear warhead or a Type 40 torpedo.

Torpedoes: 4 533mm and 4 650mm torpedo tubes. Uses 530mm and 65mm torpedoes. A tube liner can be used to reduce a 650 mm launch tube to 533 mm. Total ***40 weapons. In addition, the improved AK-class and AKⅡ-class have six additional 533 mm external launch tubes on the upper part of the bow.

Countermeasures: "Round Hat" electronic warfare equipment, radar reconnaissance instrument.

Radar: "Magic pair" or "Magic half" sea search radar with back-to-back antennas on the same mast as the electronic warfare equipment.

Sonar: "Shark Gill" hull sonar, active and passive search and attack type, low and medium frequency. "Rat Bark" hull sonar, active attack, high frequency. "Yugong 3 very low frequency passive towed array.