HMAS Seamist (10) (Note: her commissioned name was HMAS Seamist, not Sea Mist as recorded on some Navy websites) was formerly a Sydney-based luxury motor cruiser, commissioned as a channel patrol boat into and operated by the Royal Australian Navy (RAN) during World War II.

[1] Sea Mist as she was previously named, was and still is a 65 ft cruiser built by Lars Halvorsen and Sons and launched on 14 August 1939.

In March 1944 Seamist was transferred to the Naval Auxiliary Patrol unit of the RAN, and following a refit in Sydney, she was assigned as an Air Sea Rescue vessel for duty at Darwin.

On 26 February 1945, with Steady Hour and the former three-masted coastal trader Alma Doepel, she departed Darwin for Thursday Island and Townsville for a refit.

Seamist was re-purchased by Hope Bartlett, and was later owned by a succession owners, including the legendary Australian radio broadcaster Jack Davey who purchased her in 1954 as Sea Mist, selling her in 1958 a year before his death.