Derivatives / Succeeded by -- diesel - electric Stork Wartsila 12SW28 -- diesel - electric Paxman 12YJCZ Used by 0 ST-253 ROV class support ship AO 41964 Darshak (1959) class support ship AO 21982 Shirase class icebreakers AW 61984 Challenger class support ship AO 51993 Fennica class icebreakers AW 21994 Marjata (1994) class support ship AO 22000 Triton class corvette FS 22001 Svalbard class icebreakers AW 22015 Joint Support Ship class support ship AO 52017 Lewis B Puller Class landing ship/platform dock L 02018 UT540WP class support ship AO 12019 RRS Sir David Attenborough support ship AO 22020 Harry deWolf class icebreakers AW 2 In Service Royal New Zealand Navy Indian Navy Japanese Navy Royal Navy Finnish Navy Royal Norwegian Navy Australian Customs and Border Protection Service Norwegian Coast Guard Royal Netherlands Navy US Navy Her Majesty's Government Canadian Armed Forces