Propeller

Propeller from the RMS Oceanic which ran aground off Foula off Shetland's west coast in 1914. Strictly speaking at the time of her sinking she would have been HMS Oceanic as she had been requisitioned by the Royal Navy to patrol the waters between Scotland and Faroe. 
A ship belonging to the White Star Line it is often referred to as a sister ship of the Titanic but it was launched in 1899 sometime before the Titanic's short lived career.