Upholder/Victoria-class submarine
 The Upholder/Victoria-class submarines also known as the Type 2400 (due to their displacement of 2400 tonnes) are diesel-electric Fleet submarines designed in the UK in the late 1970s to supplement the Royal Navy's nuclear submarine force.They were decommissioned with the end of the Cold War after a short length of service in the Royal Navy. In 1998 Canada purchased the submarines and a suite of trainers from the Royal Navy to replace the decommissioned Oberon class of submarines.