INFOGRAPHICS #7: Los Angeles class nuclear powered fast attack submarines of US Navy

USS Key West, Flight II Los Angeles class submarine of US Navy

Los Angeles-class (SSN688) submarines form the backbone of the U.S. Navy's nuclear-powered attack submarine fleet; it is the class that has more operating nuclear submarines than any other in the world. Their primary missions are to hunt enemy submarines and surface ships, launch cruise-missile strikes on land-based targets and gather intelligence. The boats were designed by General Dynamics Electric Boat and they are divided in three flights (Flight I, II and III) based on improvements in their design and equipment such as electronics, armament and characteristics. The Flight I consists of 31 submarines (only 11 are active, in commission), the Flight II have a 12 Vertical Launch Tubes (VLS) for Tomahawk missiles and it consists of 8 submarines (all in active service) and the final Flight III consists of 23 submarines of which only one has been retired. The final 23 submarines of the 62-ship class are known also as improved 688s (688i). These are quieter and they are equipped with more advanced electronics and sensors as well as retractable bow planes (and not on their sails like the other Flights) and hardened sails to break through ice during Arctic operations.