The Polar-firing 'Lafayette' joins the Navy after extensive sea trials and it is joined by the killer-sub 'Jack'. These two new craft take their places in uncle Sam s sea defenses under the shadow of the 'Thresher' tragedy. The Lafayette, the newest and largest nuclear submarine making its way through the open sea. MOHS - Crowd of people standing on the pier, bidding farewell to their loved ones. MS - Sailors embarking on the USS Lafayette. MCUS - Photo journalist. MS - The naval crew of the USS Lafayette standing at attention on top of the submarine. MS - Raising of the American Flag. New Hampshire naval yard in Portsmouth, The killer submarine Jack is launched.