Noun
SSBN (plural SSBNs)
(US, military, nautical) Sub-surface ballistic nuclear: a nuclear-powered submarine carrying and launching ballistic missiles armed with nuclear weapons
Therefore, to increase the percentage of nuclear forces surviving a first strike, a nation can simply increase SSBN deployment, as well as deployment of reliable communications links with SSBNs. Source: Internet
Ohio-class SSGN cruise missile submarine converted from SSBN and returned to service on 15 October 2007. Source: Internet
Polaris A-1 The world's first operational SSBN was USS with 16 Polaris A-1 missiles, which entered service in December 1959 and conducted the first SSBN deterrent patrol November 1960-January 1961. Source: Internet
The SSBN facility at Rota was closed in 1979 as King's Bay began refitting submarines. Source: Internet
The navy has 18 Ohio-class submarines: 14 ballistic missile submarines (SSBN) and four that were later converted to guided missile submarines (SSGN). Source: Internet
The SSBN base at Guam was closed at this time. Source: Internet