CUSTOM USS BOISE (SSN 764) WatchHISTORY USS Boise (SSN 764) is a Los Angeles class attack submarine. It is the second ship of the United States Navy to be named for Boise, Idaho. The Los Angeles class, sometimes called the LA class or the 688 class, is a class of nuclear powered fast attack submarines that forms the backbone of the U. S. Navy's submarine force. Sixty two submarines of this class have been completed, 41 are still in active service. The Los Angeles class contains more