In April 1989 the press reported that the U.S. Navy would he retiring three types of tactical nuclear weapons: the underwater-to-underwater Subroc and the nuclear versions of the Asroc antisubmarine rocket and the Terrier surface-to-air missile. This leaves submarine-launched ballistic missiles, the nuclear variant of the Tomahawk cruise missile, and some air-dropped bombs as the only nuclear weapons in the Navy's arsenal.
Barnett, Roger W.
"Tactical Nuclear Weapons and Maritime Strategy,"
Naval War College Review: Vol. 43
, Article 1.
Available at: http://digital-commons.usnwc.edu/nwc-review/vol43/iss3/1