Buuxi weedhan soo socota: "Endurance" waxaa loogu magac daray markabkii uu Sir Ernest Shackleton u adeegsaday safarkiisii Antarctica ee 1914-1917. Magacyada doomaha "Endurance" iyo doomaha soo degaya waxay sii wadeen xiriirka Shackleton: "James Caird" iyo "Dudley Docker" waxaa loo magacaabay doomaha ay wadeen Shackleton's "Endurance", "Nimrod" waxaa loo magacaabay markabka uu Shackleton ku isticmaalay safarkiisii
Safarkii Antarctic ee 1907<unk>1909, iyo "Eddie Shackleton" waxaa loogu magac daray wiilkii sahamiyaha ahaa. Halkudhiga "Adkeysiga", "fortitudine vincimus" ("adkeysiga, waan guuleysanaa"), sidoo kale wuxuu ahaa halkudhiga qoyska Shackleton.