A team of divers is exploring the wreck of Belfastbuilt ocean liner HMHS Britannic the last of the three White Star Line sister ships that include Titanic and OlympicDivers and remote operated vehicles ROVs have penetrated the wreck of the former hospital ship which has lain close to the Greek port of Kea in the Aegean Sea since her sinking in November 1916 as she passed through a minefield The resulting footage will be screened in a History Channel documentary