During World War I, the French Navy purchased Medea and armed her with a 75mm cannon for use in convoy escort duty. (Her name under the French flag was Corneille.) Between the wars, she was owned by members of Parliament. During World War II, the Royal Navy put her to work anchoring barrage balloons at the mouth of the River Thames.
After World War II, Medea passed among Norwegian, British, and Swedish owners before being purchased by Paul Whittier in 1971. Whittier restored the yacht to its original condition and donated her to the Maritime Museum of San Diego in 1973.
Medea was featured in the "Steam Ship Cleaner" episode of the Discovery Channel series Dirty Jobs, when Mike Rowe cleaned the inside of the boilers of the yacht.
According to the Maritime Museum of San Diego, “Medea still cruises the Bay on special excursion cruises for invited guests.” She is not permitted to carrying passengers, but is available dockside for visitors.