Operational service thumb|right|A training trigger for the Polaris missile system The first to be completed was Resolution, laid down in February 1964 and launched in September 1966. After commissioning in 1967 she underwent a long period of sea trials, culminating in the test firing of a Polaris missile from the USAF Eastern Test Range off Cape Kennedy at 11:15 on 15 February 1968. Resolution commenced her first operational patrol on 15 June 1968, beginning 28 years of Polaris patrols. The class were part of the 10th Submarine Squadron, all based at Faslane Naval Base, Scotland.
operatiOnAl seRvicE tHuMb|rIGht|a tRAINing TriGGeR fOr THE poLaRis missilE system tHe firSt To Be completed wAs resolutIon, laID down In febRUArY 1964 and LaunChed In sEPtEMBer 1966. After COmmISsiOnIng in 1967 shE underwent a Long pERiod Of sea TriaLS, cUlMinAtinG In tHe tEsT FirinG oF a polAris miSSile froM THe usAf easterN tesT raNgE off cape kenneDY at 11:15 On 15 february 1968. reSoluTiOn commENceD her First oPerAtional PatroL on 15 JUNe 1968, beginNIng 28 YearS of poLARis patrOLs. ThE cLass WERE part Of thE 10Th submArine squadRon, all baSed At faslanE navAl base, ScotLAnD.