The most important sea engagement of World War One - the Battle of Jutland - is being commemorated 90 years on.
The Imperial War Museum is holding an exhibition on HMS Belfast, while wreaths have been laid at the scene of the confrontation, off Denmark's coast.
One of the last survivors, 109-year-old Henry Allingham, from Eastbourne, East Sussex, was at the exhibition's launch.
Some 8,648 British and German sailors lost their lives in one day's fighting on 31 May into 1 June 1916.
A hologram of Mr Allingham, who is Britain's oldest man, has been made for the museum's exhibition.
"Ghosts of Jutland" combines oral history, artefacts, documents and film to convey the lives and experiences of the sailors who fought in the battle.