As noted by The Lochside Press: HMS Triumph, the last of the Royal Navy ... as successors to the Swiftsure class and designated as “hunter-killers” within the Royal Navy’s nuclear submarine ...

announced in 2018 that the Ministry of Defence had signed a £1.5 billion contract to build a seventh Astute-class hunter-killer submarine called HMS Agincourt. That would have made it the sixth ...