"Dunmore" collided with a naval longboat off Mrs Macquarie's Point in Sydney Harbour in 1909, resulting in the drowning of 15 sailors from "HMS Encounter".Outbound from Sydney, "Dunmore" was involved in yet another collision, in 1914, off the Heads of Sydney Harbour; this time she collided with another 'Stone Fleet' ship, the steel-hull "Kiama," which was inbound and fully-laden with crushed stone.