SS Orcades was an ocean liner serving primarily the UK – Australia – New Zealand route.

She started service as a British Royal Mail Ship (RMS) carrying first and tourist class passengers.

Orcades carried many migrants to Australia and New Zealand[1] and was later used as a cruise ship, and is featured in the British Pathe films "I am a passenger" on YouTube.

The vessel's near-sister ships were Oronsay and Orsova In 1952 Orcades was fitted with a 'top hat' funnel extension to clear smoke from the after decks.

On 7 May 1952, she ran aground in Port Philip Bay half a mile off Rosebud Pier, Victoria, Australia.