Editing Hotel-class submarine (section)

==Variants==

===Hotel I===
The first Hotel-class submarine, {{ship|Soviet submarine|K-19||2}}, was laid down on 17 October 1958 and commissioned on 12 November 1960, only to suffer numerous setbacks and accidents. The last of the eight Hotel submarines was launched on April 1, 1962. All of them were built at Severodvinsk State Shipyard 402 (now known as the Northern Machine-Building Enterprise - SEVMASH) in Molotovsk (now Severodvinsk) shipyard<ref>[https://web.archive.org/web/20160306100157/http://russiafile.com/hotel.htm Hotel Class Submarines<!-- Bot generated title -->] </ref> [[Russia]].

===Hotel II===
Beginning in 1961 and ending in 1963, all Hotels but one (''K-145'') were equipped with the new D-4 launch system, which could launch missiles from a depth of {{convert|16|m|abbr=on}}. The modified submarines received the [[NATO reporting name]] Hotel II. They were armed with [[R-21 (missile)|R-21 (SS-N-5 Serb)]] missiles, with a range of {{convert|1,200|km|nmi|abbr=on}}.<ref name="ref1996"/><ref>{{Citation
  | last = Jackson
  | first = Robert
  | title = Submarines of the World
  | publisher = Friedman/Fairfax Books
  | year = 2000
  | isbn = 1-58663-294-9 | oclc = 48261790
 }}</ref>  The installation of the D-4 launching system required some structural changes of the submarine; before launch, the launch tube had to be flooded. The chief designer of the modification was S.N. Kovalev.

===Hotel III===
From 1969 to 1970, ''K-145'' was modified by Project 701 to test the [[R-29 (missile)|R-29 missiles]], receiving the [[NATO reporting name]] Hotel III. It was lengthened to 130 meters and its displacement increased to 5,500 tons surfaced and 6,400 tons submerged. The maximum speed was reduced to {{Cvt|18|kn}} on the surface and {{Cvt|22|kn}} submerged. Six launchers for R-29 missiles were placed in two compartments, each with three launchers. In 1976 ''K-145'' returned to combat service.<ref name="ref1996"/>