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SSN-774 Virginia-class
SSN-774 弗吉尼亞級攻擊核潛艇
NSSN New Attack Submarine Centurion
「新型攻擊型核潛艇」計劃
原文:
The Secretary of Defense in his October 1993 bottom-up review determined that production of the Seawolf class submarine would cease with the third submarine, and that the Navy should develop and build a new attack submarine as a more cost-effective follow-on to the Seawolf class, with construction beginning in fiscal year 1998 or 1999 at Electric Boat. The New Attack Submarine is the first U.S. submarine to be designed for battlespace dominance across a broad spectrum of regional and littoral missions as well as open-ocean, "blue water" missions. The program design goal is to produce a submarine flexible enough to carry out seven very different missions:
Covert Strike by launching land-attack missiles from vertical launchers and torpedo tubes;
Anti-Submarine Warfare with an advanced combat system and a flexible payload of torpedoes;
Anti-Ship Warfare, again, using the advanced combat system and torpedoes;
Battle Group Support with advanced electronic sensors and communications equipment;
Covert Intelligence, Surveillance and Reconnaissance, using sensors to collect critical intelligence and locate radar sites, missile batteries and command sites as well as to monitor communications and track ship movements;
Covert Minelaying against enemy shipping; and
Special Operations, including search and rescue, reconnaissance, sabotage, diversionary attacks, and direction of fire support and strikes.
The New Attack Submarine is designed for multi-mission operations and enhanced operational flexibility. SEAWOLF (SSN-21)-Class quieting has been incorporated in a smaller hull while military performance has been maintained or improved. Compared with the Seawolf, the NSSN is slower, carries fewer weapons, and is less capable in diving depth and arctic operations. On the other hand, the NSSN is expected to be as quiet as the Seawolf, will incorporate a vertical launch system and have improved surveillance as well as special operations characteristics to enhance littoral warfare capability. While the 688-I submarines are noisier than the improved Russian Akula class, the Seawolf is quieter than Akula and the upcoming Russian SSN-P-IX class. The primary design driver for the NSSN is acoustic quietness equal to that of the Seawolf, even at the cost of reducing maximum top speed. With a focus on the littoral battlespace, the New Attack Submarine has improved magnetic stealth, sophisticated surveillance capabilities, and Special Warfare enhancements. |
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