Titanic's sunken sister
The BBC PM programme's Andrew Bomford dives more than 100 metres underwater in a submarine to see the wreck of the Britannic in the Aegean, where it sank in 1916.
The BBC PM programme's Andrew Bomford dives more than 100 metres underwater in a submarine to see the wreck of the Britannic in the Aegean, where it sank in 1916.