Editing Upholder/Victoria-class submarine (section)

===''Chicoutimi'' fire===
''Chicoutimi'' cleared Faslane on 4 October 2004 on her homeward journey to Canada. Since Faslane was a nuclear submarine base, ''Chicoutimi'' was forced to travel on the surface for the first stage of the passage. On 5 October ''Chicoutimi'' was passing through a gale with {{convert|6|m|adj=on}} seas. During a watch change at 03:00 sea water entered the conning tower. The lower hatch prevented the water from entering the sub; however, the drain in the tower failed to operate. When the lower hatch was opened, the water fell into the sub and was then pumped overboard with the incident noted. The drain valves required much repair before diving. At 10:52 two crew entered the tower to perform the needed repairs. The upper hatch was opened during the repair and after roughly 25 minutes, another tool was needed from within the sub. Once the lower hatch was opened, the submarine was hit by a large wave thereby throwing roughly {{convert|500|impgal|L}} of sea water into ''Chicoutimi''. Electrical explosions and fire erupted soon afterward which spread quickly. In order to fight the fire, all systems aboard the submarine were shut down, leaving the submarine dead in the water. An attempt to restore auxiliary power caused another fire to break out. At 19:12, attempts to remove smoke by starting an [[oxygen generator]] caused another fire. Nine sailors were injured, three seriously.<ref>Milner, pp. 323–4</ref>

The first ship on the scene was the Irish patrol vessel {{ship|LÉ|Róisín|P51|6}}, which suffered damage in the heavy seas and was forced to return to port.<ref>{{cite web |url=https://www.telegraph.co.uk/news/1473471/Severe-weather-hinders-submarine-rescue.html |title= Severe weather hinders submarine rescue|date=6 October 2004 |website=The Daily Telegraph |access-date=14 June 2017 }}</ref> The British frigate {{HMS|Montrose|F236|6}} arrived the following day to provide aid. Rescue efforts had been hampered by the poor weather. The three seriously injured crewmen were evacuated by ''Montrose''{{'}}s helicopter and flown directly to [[Sligo]], Ireland. One sailor died of his injuries shortly after arrival. ''Chicoutimi'' was taken in tow on 7 October and arrived back at Faslane on 9 October.<ref>Milner, pp. 324–5</ref><ref>{{cite news|url=http://news.bbc.co.uk/1/hi/scotland/3719760.stm|title=Rescue ship reaches sub crew|publisher=BBC News|access-date=23 May 2016|date=7 October 2014}}</ref>
[[File:Tern1.jpg|thumb|HMCS ''Chicoutimi'' aboard the heavy-lift ship ''Tern'', April 2009]]
''Chicoutimi'' was transported to Halifax aboard the submersible heavy-lift vessel ''Eide Transporter'', arriving on 1 February 2005. The commissioning of the submarine was delayed until the assessment of the damage could take place. Following the assessment, ''Chicoutimi'' was carried to Esquimalt aboard the submersible heavy-lift ship ''Tern'', arriving on 29 April 2009 to undergo a major refit.<ref name=chircn/>