Plans are being prepared to launch submarine tours of Titanic's sister ship.

Plans are being prepared to launch submarine tours of Titanic’s sister ship. Britannic was serving as a hospital ship when she sank off the Greek island of Kea in November 1916 as a result of hitting a mine.

Although she was carrying more than 1,000 people, there were just 30 casualties. Today she lies in 119m of water and remains one of the most well-preserved and historically significant wrecks on the ocean floor.

Marine historian Simon Mills, who bought the wreck from the British Government in 1996 for the sum of £1, hopes to operate three tours of the ship a day using 3 or 4-seater submersibles. Britannic was built by Harland & Wolff in Belfast alongside her ill-fated sister, but was completed three years later and incorporated a number of safety modifications.