The North Arm contains another significant ships graveyard, now known as Garden Island Ships' Graveyard, which includes 25 identified wrecks. It was also used to house explosives stores from the 1880s. The remains of the iron and wooden ships that were abandoned between 1909 and 1945 are now bird roosts and a canoeing attraction. The ships in the graveyard were launched from 1857 to 1920 and include the "Santiago" and "Dorothy H. Sterling", as well as other sailing ships, steamships and iron barges.