In 1864 the Admiralty agreed to loan HMS Indefatigable , a fifty -- gun sailing ship frigate , launched in 1848 .
In 1864 the Admiralty retired from active service in 1857 to the Indefatigable committee .
In 1864 the Admiralty agreed to loan HMS Indefatigable , a fifty -- gun sailing ship frigate , launched in 1848 , and retired from active service in 1857 to the Indefatigable committee .