W80-4 ALT-SLCM variant of the warhead, for use on a new navy sea-launched cruise missile to be deployed in the late 2020s. Mods See also List of nuclear weapons References W80 information from Cary Sublette's NuclearWeaponArchive.org External links W80 information from globalsecurity.org Nuclear warheads of the United States Military equipment introduced in the 1970s