World War One Battle of Jutland centenary marked
The Battle of Jutland, the largest naval engagement of World War One that began 100 years ago, is to be commemorated on Tuesday.
A total of 8,648 sailors died during the battle that took place off the coast of Denmark between 31 May and 1 June 1916 - involving about 250 ships.
Among the centenary tributes, a service will take place at St Magnus Cathedral in Kirkwall, Orkney, followed by the paying of respects outside at the Kirkwall Wall Memorial.
At the same time, a service of remembrance will take place on board HMS Duncan at Jutland Bank, the site of the battle.
On Sunday, Prince Philip, 94, withdrew from the battle commemorations on medical grounds.
What was the Battle of Jutland?
Between 31 May and 1 June 1916, the British Royal Navy's Grand Fleet under the command of Admiral Sir John Jellicoe fought the Imperial German Navy's High Seas Fleet under Vice-Admiral Reinhard Scheer.
The battle was fought near the coast of Denmark's Jutland peninsula and became the largest naval battle and only full-scale clash of battleships during World War One.
Fourteen British and eleven German ships were sunk with thousands losing their lives. Both sides claimed victory.
The British lost more ships and twice as many sailors but succeeded in containing the German fleet.
Among the British losses was HMS Indefatigable which was hit by German shellfire, killing all but two of 1,019 men on board.
HMS Queen Mary was also sunk, with the loss of 1,266 crew.
After the fighting, the British press criticised the Grand Fleet's failure to force a decisive outcome while Scheer's plan of destroying a substantial portion of the British fleet also failed.
International representatives in attendance
David Cameron and German President Joachim Gauck will attend the service at St Magnus Cathedral along with the Princess Royal and her husband Vice Admiral Sir Tim Laurence, representing the Commonwealth War Graves Commission.
Representatives of all the other nations connected to the battle - including Australia, Canada, Ireland, Japan, Malta, New Zealand and South Africa - will also be at the cathedral.
The commemoration is due to begin at 11.30am and will be led by the minister of the cathedral, Fraser MacNaughton.
He will be joined by the Royal Navy's chaplain of the fleet, the Venerable Ian Wheatley, and a German naval chaplain.
In a message on the St Magnus order of service, the Duke of Edinburgh said that, whatever the judgement on the outcome, the commemorations were focused on the "endurance and gallantry" of all those who took part.
"War may be senseless and the Battle of Jutland may have been inconclusive, but there can be no doubt that their sacrifice was not in vain," he said.
"Historians may differ in their opinions about who won and who lost, but the fact remains that the German High Seas Fleet was unable to effectively challenge the Royal Navy's dominance at sea for the rest of the war".