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FORGOTTEN
WRECKS OF THE
FIRST WORLD WAR
The War at Sea
The First World war was the first truly global conflict, involving countries from every
continent on earth. But most of the fighting actually took place in Europe.
But the war at sea was what took the fighting around the world. Significant actions that
would affect the course of the war took place in every ocean in every corner of the globe.
The first year of the war
was dominated by
‘cruiser warfare’. Isolated
German warships based
at foreign ports in
Germany’s young empire
began to attack British
and Commonwealth
merchant ships around
the world.
SMS Emden, a German
cruiser, was one such
ship, which successfully
captured or sank 26 ships
in the Indian Ocean
before it was caught and
defeated by the
Australian cruiser HMAS
Sydney in November
1914.
In the Pacific Ocean, a
small squadron of vessels
under Admiral Graf von
Spee defeated a British
Squadron off Chile,
sinking two British
cruisers with all hands. It
was the first defeat
suffered by the Royal
Navy in 100 years and
1,600 men were lost.
Already the war at sea
had produced a disaster
on a worse scale than the
loss of the Titanic two
years earlier.
The Royal Navy, shocked
and stunned by the
defeat, sent a new force
to find von Spee’s
squadron. Less than a
month later, at the
Falkland Islands, the
German force was
annihilated with the loss
of 1,900 men.
In home waters, both
Britain and Germany
tried to blockade their
enemy.
In home waters, both
Britain and Germany
tried to blockade their
enemy.
In 1914 Britain
established a distant
blockade of the North
Sea and situated the
Grand Fleet at Scapa
Flow.
In home waters, both
Britain and Germany
tried to blockade their
enemy.
In 1914 Britain
established a distant
blockade of the North
Sea and situated the
Grand Fleet at Scapa
Flow.
Merchant traffic to the
North Sea would have to
pass through the Dover
Straits where it could be
searched for contraband.
The German High Seas
Fleet was based in its
ports on the north coast.
The German High Seas
Fleet was based in its
ports on the north coast.
Each side wanted to use
their fleet to force a
battle where they would
have an advantage in
numbers. In 1914 and
1915 this created a series
of skirmishes in the
North Sea.
The German High Seas
Fleet was based in its
ports on the north coast.
Each side wanted to use
their fleet to force a
battle where they would
have an advantage in
numbers. In 1914 and
1915 this created a series
of skirmishes in the
North Sea.
In 1916, both fleets
found themselves facing
each other at the Battle
of Jutland.
Jutland was the largest
battleship encounter in
history. Whilst many
Second World War
battles involved more
ships, in terms of
tonnage committed to
direct action with one
another, Jutland is the
largest.
However, although the
German fleet sank more
British ships than it lost,
it was unable to break
Britain’s blockade.
But Germany had an
alternative weapon with
which to fight a blockade:
the U-boat.
But Germany had an
alternative weapon with
which to fight a blockade:
the U-boat.
At the outbreak of the
war, neither side had
expected much from U-
boats and only expected
that they may serve as
scouts for the big
battleship fleets.
But Germany had an
alternative weapon with
which to fight a blockade:
the U-boat.
At the outbreak of the
war, neither side had
expected much from U-
boats and only expected
that they may serve as
scouts for the big
battleship fleets.
That changed when one
U-boat sank three British
cruisers in 90 minutes,
with the loss of 1,500
lives.
In 1915 and 1916, Germany
used its U-boats to attack
merchant ships, in an effort to
force Britain to lift its blockade,
which was starting to impact on
the German population and
industry.
Both campaigns were supposed
to be conducted according to
the rules of war, and merchant
crews were to be made safe
before ships were sunk. This
was not always observed.
However, neither campaign
succeeded.
In 1917, Germany tried a
new tactic. They declared
all of the seas around
Britain a war zone within
which ANY ship – military
or civilian, British or
neutral, would be
attacked without
warning.
Germany hoped that by
sinking as much
merchant shipping as
possible, Britain would be
starved out of the war by
the end of 1917.
The U-boat campaign had
a very serious impact on
British merchant trade.
British politicians and
admirals became worried
that without more
supplies reaching the
country, Britain would
not be able to continue
the war into 1918.
Two things saved Britain:
• New technology
• New tactics
New Technology
New weapons like the
depth charge, invented in
Britain in 1915, had
started to become more
advanced and more
successful.
Britain finally had a
weapon with which to
fight under water.
New Tactics
In 1917, the Allies started
to group their ships into
convoys. This made it
harder for U-boats to find
isolated ships, and easier
for the Royal Navy to
protect them.
The U-boats were
defeated in 1918, but
even so their impact was
spectacular.
They were even more
successful in the First
World War than they
were in the Second
And Britain was the
maritime power that
suffered the most. By
1922, with the loss of so
many vessels and as a
result of treaties
designed to govern the
size of fleets around the
world, the US overtook
Britain to become the
worlds leading maritime
superpower.
It is difficult to put any sort
of number on the lives lost
in the war at sea.
For Britain and her Empire
(today’s Commonwealth)
the best way to establish the
cost is by looking at the
Commonwealth War Graves
Commission figures.
The Merchant Navy
memorial in London lists
more than 12,100 names
of merchant seamen and
women who died in the
war.
Commonwealth War
Graves Commission
The three Royal Navy
memorials in Chatham,
Portsmouth and
Plymouth list 25,500
names of those lost at
sea.
Commonwealth War
Graves Commission
In Southampton the
Hollybrook memorial lists
1,900 names of soldiers
and airmen lost at sea.
Commonwealth War
Graves Commission
Around the world are the
graves of another 17,600
men and women from
Britain and the
Commonwealth who
died at sea.
Commonwealth War
Graves Commission
The total figure is therefore approximately 57,200.
The German Navy suffered more than 78,000 casualties, including 21,000 deaths.
Fur ther Information
Please visit our website
www.forgottenwrecks.maritimearchaeologytrust.org
Here you will find other wreck case studies & WW1
PowerPoints, Audio articles, 3D models, Artefacts , features
about the war at sea and much more!
Please contact us if you would like more information, to volunteer, or to book a
talk or schools session.

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The War at Sea

  • 1. FORGOTTEN WRECKS OF THE FIRST WORLD WAR The War at Sea
  • 2.
  • 3. The First World war was the first truly global conflict, involving countries from every continent on earth. But most of the fighting actually took place in Europe.
  • 4. But the war at sea was what took the fighting around the world. Significant actions that would affect the course of the war took place in every ocean in every corner of the globe.
  • 5. The first year of the war was dominated by ‘cruiser warfare’. Isolated German warships based at foreign ports in Germany’s young empire began to attack British and Commonwealth merchant ships around the world.
  • 6. SMS Emden, a German cruiser, was one such ship, which successfully captured or sank 26 ships in the Indian Ocean before it was caught and defeated by the Australian cruiser HMAS Sydney in November 1914.
  • 7. In the Pacific Ocean, a small squadron of vessels under Admiral Graf von Spee defeated a British Squadron off Chile, sinking two British cruisers with all hands. It was the first defeat suffered by the Royal Navy in 100 years and 1,600 men were lost. Already the war at sea had produced a disaster on a worse scale than the loss of the Titanic two years earlier.
  • 8. The Royal Navy, shocked and stunned by the defeat, sent a new force to find von Spee’s squadron. Less than a month later, at the Falkland Islands, the German force was annihilated with the loss of 1,900 men.
  • 9. In home waters, both Britain and Germany tried to blockade their enemy.
  • 10. In home waters, both Britain and Germany tried to blockade their enemy. In 1914 Britain established a distant blockade of the North Sea and situated the Grand Fleet at Scapa Flow.
  • 11. In home waters, both Britain and Germany tried to blockade their enemy. In 1914 Britain established a distant blockade of the North Sea and situated the Grand Fleet at Scapa Flow. Merchant traffic to the North Sea would have to pass through the Dover Straits where it could be searched for contraband.
  • 12. The German High Seas Fleet was based in its ports on the north coast.
  • 13. The German High Seas Fleet was based in its ports on the north coast. Each side wanted to use their fleet to force a battle where they would have an advantage in numbers. In 1914 and 1915 this created a series of skirmishes in the North Sea.
  • 14. The German High Seas Fleet was based in its ports on the north coast. Each side wanted to use their fleet to force a battle where they would have an advantage in numbers. In 1914 and 1915 this created a series of skirmishes in the North Sea. In 1916, both fleets found themselves facing each other at the Battle of Jutland.
  • 15. Jutland was the largest battleship encounter in history. Whilst many Second World War battles involved more ships, in terms of tonnage committed to direct action with one another, Jutland is the largest. However, although the German fleet sank more British ships than it lost, it was unable to break Britain’s blockade.
  • 16. But Germany had an alternative weapon with which to fight a blockade: the U-boat.
  • 17. But Germany had an alternative weapon with which to fight a blockade: the U-boat. At the outbreak of the war, neither side had expected much from U- boats and only expected that they may serve as scouts for the big battleship fleets.
  • 18. But Germany had an alternative weapon with which to fight a blockade: the U-boat. At the outbreak of the war, neither side had expected much from U- boats and only expected that they may serve as scouts for the big battleship fleets. That changed when one U-boat sank three British cruisers in 90 minutes, with the loss of 1,500 lives.
  • 19. In 1915 and 1916, Germany used its U-boats to attack merchant ships, in an effort to force Britain to lift its blockade, which was starting to impact on the German population and industry. Both campaigns were supposed to be conducted according to the rules of war, and merchant crews were to be made safe before ships were sunk. This was not always observed. However, neither campaign succeeded.
  • 20. In 1917, Germany tried a new tactic. They declared all of the seas around Britain a war zone within which ANY ship – military or civilian, British or neutral, would be attacked without warning. Germany hoped that by sinking as much merchant shipping as possible, Britain would be starved out of the war by the end of 1917.
  • 21. The U-boat campaign had a very serious impact on British merchant trade. British politicians and admirals became worried that without more supplies reaching the country, Britain would not be able to continue the war into 1918.
  • 22. Two things saved Britain: • New technology • New tactics
  • 23. New Technology New weapons like the depth charge, invented in Britain in 1915, had started to become more advanced and more successful. Britain finally had a weapon with which to fight under water.
  • 24. New Tactics In 1917, the Allies started to group their ships into convoys. This made it harder for U-boats to find isolated ships, and easier for the Royal Navy to protect them.
  • 25. The U-boats were defeated in 1918, but even so their impact was spectacular. They were even more successful in the First World War than they were in the Second
  • 26. And Britain was the maritime power that suffered the most. By 1922, with the loss of so many vessels and as a result of treaties designed to govern the size of fleets around the world, the US overtook Britain to become the worlds leading maritime superpower.
  • 27. It is difficult to put any sort of number on the lives lost in the war at sea. For Britain and her Empire (today’s Commonwealth) the best way to establish the cost is by looking at the Commonwealth War Graves Commission figures.
  • 28. The Merchant Navy memorial in London lists more than 12,100 names of merchant seamen and women who died in the war. Commonwealth War Graves Commission
  • 29. The three Royal Navy memorials in Chatham, Portsmouth and Plymouth list 25,500 names of those lost at sea. Commonwealth War Graves Commission
  • 30. In Southampton the Hollybrook memorial lists 1,900 names of soldiers and airmen lost at sea. Commonwealth War Graves Commission
  • 31. Around the world are the graves of another 17,600 men and women from Britain and the Commonwealth who died at sea. Commonwealth War Graves Commission
  • 32. The total figure is therefore approximately 57,200.
  • 33. The German Navy suffered more than 78,000 casualties, including 21,000 deaths.
  • 34. Fur ther Information Please visit our website www.forgottenwrecks.maritimearchaeologytrust.org Here you will find other wreck case studies & WW1 PowerPoints, Audio articles, 3D models, Artefacts , features about the war at sea and much more! Please contact us if you would like more information, to volunteer, or to book a talk or schools session.

Editor's Notes

  1. These PowerPoints have been prepared as part of the Heritage Lottery funded Forgotten Wrecks of the First World War project for the use of groups and teachers. More information about the project can be found at: http://forgottenwrecks.maritimearchaeologytrust.org/
  2. This PowerPoint was created by the Maritime Archaeology Trust as part of the Forgotten wrecks of the First World War Project. Fully funded by the Heritage Lottery, this project coincides with the centenary of the First World War, exploring and raising the profile of the wrecks and related coastal sites along the south coast of England, dating to the First World War.
  3. The maritime war was what made the First World War truly global conflict. Despite the range of nations from every continent involved in the war, actual extent of conflict was quite narrow, mostly in Europe.
  4. Contrast with the extent of naval encounters over the four years of war, and you can see how it was the maritime war that spread war around the globe.
  5. In the Cruiser War, Germany attempted to use its overseas squadrons to threaten Britain’s Empire. The German cruiser Emden caused chaos in the Indian Ocean, sinking 2 Allied warships, sinking or capturing 23 Allied merchant ships, and attacking shore installations in Malaya and India. All in just two months.
  6. Her presence was such a threat that merchant shipping was almost totally stopped, until she was finally destroyed by Australian warship HMAS Syndey in November 1914.
  7. November 1914, in the Pacific, a German cruiser squadron under Admiral Graf von Spee defeated a Royal Navy squadron at the Battle of Coronel; the first RN defeat for a century. Two cruisers were lost with all hands – 1600 men, more than were lost on Hood or Titanic – and their commander Admiral Craddock.
  8. The uproar in Britain and the threat posed by von Spee forced the Navy to despatch two of its most modern battle cruisers, who restored Navy honour by defeating von Spee’s squadron at the Battle of the Falklands where 1900 Germans were killed. The story of Coronel and the Falklands makes an interesting comparison with the loss of Hood and the pursuit of Bismarck which followed a similar story (public response to loss of Hood, Churchill’s command to sink the Bismarck, the massive redirection of resources to hunt down Bismarck and its eventual loss). The Bismarck story is well known, but the Coronel/Falklands less so.
  9. Most conflict occurred in the North Sea. The Royal Navy tried to maintain a distant blockade of Germany and declared the North Sea a war zone. Merchant traffic was only allowed in via the Dover Straits where it could be searched for contraband. Contraband quickly evolved from military supplies to any supply bound for Germany and soon no maritime trade (including food for the civil population) was allowed into the North Sea. This was an illegal policy according to the 1909 Declaration of London and put Britain at odds with neutral countries.
  10. Most conflict occurred in the North Sea. The Royal Navy tried to maintain a distant blockade of Germany and declared the North Sea a war zone. Merchant traffic was only allowed in via the Dover Straits where it could be searched for contraband. Contraband quickly evolved from military supplies to any supply bound for Germany and soon no maritime trade (including food for the civil population) was allowed into the North Sea. This was an illegal policy according to the 1909 Declaration of London and put Britain at odds with neutral countries.
  11. Most conflict occurred in the North Sea. The Royal Navy tried to maintain a distant blockade of Germany and declared the North Sea a war zone. Merchant traffic was only allowed in via the Dover Straits where it could be searched for contraband. Contraband quickly evolved from military supplies to any supply bound for Germany and soon no maritime trade (including food for the civil population) was allowed into the North Sea. This was an illegal policy according to the 1909 Declaration of London and put Britain at odds with neutral countries.
  12. The blockade also kept the German fleet hemmed in the North Sea and throughout 1914 and 1915 several small skirmishes occurred as each side tried to force a fight on their terms, where they could bring their full fleet to bear on a smaller force.
  13. The blockade also kept the German fleet hemmed in the North Sea and throughout 1914 and 1915 several small skirmishes occurred as each side tried to force a fight on their terms, where they could bring their full fleet to bear on a smaller force.
  14. Eventually this led to the confrontation at Jutland, the largest battleship encounter in history. Many other battles claim to be larger, but in terms of a battleship battle, and in terms of tonnage committed to direct action with one another, Jutland is clear winner over Philippine Sea (1944) and Leyte Gulf (1944). The battle was somewhat inconclusive. Tactically the Germans won by inflicting more casualties on the Royal Navy than the British did on the German fleet. But strategically the status quo was maintained and Britain maintained command of the North Sea.
  15. Eventually this led to the confrontation at Jutland, the largest battleship encounter in history. Many other battles claim to be larger, but in terms of a battleship battle, and in terms of tonnage committed to direct action with one another, Jutland is clear winner over Philippine Sea (1944) and Leyte Gulf (1944). The battle was somewhat inconclusive. Tactically the Germans won by inflicting more casualties on the Royal Navy than the British did on the German fleet. But strategically the status quo was maintained and Britain maintained command of the North Sea.
  16. But Germany had a different weapon it could use to break the deadlock. Neither side thought much use would be found for subs, perhaps only as scouts for the fleet. In September 1914, the German Imperial Navy demonstrated the potential of new technology when one submarine (U-9) sank three British cruisers (Hogue, Abukir and Cressy) in just over an hour. This caught the Royal Navy on the back foot and they were unprepared for this new form of warfare. Whilst their fleet moved to the west side of Scotland in fear of attack, Germany began building more subs for the coming years.
  17. But Germany had a different weapon it could use to break the deadlock. Neither side thought much use would be found for subs, perhaps only as scouts for the fleet. In September 1914, the German Imperial Navy demonstrated the potential of new technology when one submarine (U-9) sank three British cruisers (Hogue, Abukir and Cressy) in just over an hour. This caught the Royal Navy on the back foot and they were unprepared for this new form of warfare. Whilst their fleet moved to the west side of Scotland in fear of attack, Germany began building more subs for the coming years.
  18. But Germany had a different weapon it could use to break the deadlock. Neither side thought much use would be found for subs, perhaps only as scouts for the fleet. In September 1914, the German Imperial Navy demonstrated the potential of new technology when one submarine (U-9) sank three British cruisers (Hogue, Abukir and Cressy) in just over an hour. This caught the Royal Navy on the back foot and they were unprepared for this new form of warfare. Whilst their fleet moved to the west side of Scotland in fear of attack, Germany began building more subs for the coming years.
  19. Merchant shipping was particularly at risk. Germany, hamstrung by the blockade imposed by Britain, mounted its own blockade using U-boats, as these could slip past the Royal Navy undetected. The first U-boat penetrated the Dover strait in the 2nd week of August 1914 and they continued to pass through and into the English Channel throughout the war, despite the British attempts to mount a barrage. Germany instigated submarine commerce war three times in the war:   1915: an attempt to target merchant traffic in the hope of forcing Britain to lift its own blockade. Attacks were to be carried out according to rules of war (i.e. giving crew time to abandon ship). Stopped shortly after Lusitania incident.   1916: another attempt to reduce merchant traffic around UK.
  20. In 1917, realising that in order to force Britain out of the war they would need to fully destroy the British merchant fleet, the seas around Britain were declared a war zone. Germany commenced true unrestricted submarine warfare – attacking merchant ships without warning. The maps shows the ‘war zones’ declared by Germany. Note their impact on maritime trade that Britain was reliant on.
  21. And they were very nearly successful. This is a table of British merchant ship losses in the war. In 1917 Britain was losing these vessels at an average of more than 3 a day.
  22. These heavy losses were only turned around by the evolution of new technology and the late introduction of a major tactical change.
  23. USS Alywin firing depth charges, 1918. Depth Charges are famous in the Second World War but were first used in 1915. At first they were a primitive weapon, but prior to their introduction, there had been no effective weapon with which to attack under water targets. By 1917 they had evolved to be more deadly weapons.
  24. Along with depth charges and a range of other technologies, the use of convoys saved Britain’s merchant fleet. The idea of convoys had been rejected earlier in the war. The Royal Navy feared that grouping merchant ships together would make it easier for U-boats to sink them en-masse. In fact, by gathering them in one formation, it made it harder for U-boats to find them, and easier for the Navy to escort them.
  25. The U-boats played a massive role in the war at sea; more than is usually realised. Various authoritative sources place overall losses to U-boats at between 5,800 (post war totals) and 6,800 (total derived from modern records and including losses to mines laid by U-boats, and submarines of the Austro-Hungarian navy). Compare this to approximately 3 to 4 thousand in the Second World War.
  26. And of all the nations involved in the war, it was Britain that suffered the most damage to its fleets. On top of the massive number of merchant vessels, the Royal Navy lost heavily as well. Notice also the losses of fishing vessels, who had no choice but to continue their work in war time.
  27. It’s very difficult, if not impossible, to put a figure on the number of men lost at sea during the war. Some useful statistics are provided by the Commonwealth War Graves Commission. However, it’s important to remember that these are just war losses, so most of the crew of War Knight aren’t listed here, nor are any other victims of accidents deemed to have been hazards of the sea.
  28. The CWGC has records for 15,591 men and women of the Mercantile Marine. 12,185 of these are commemorated on the Tower Hill Memorial to Merchant Seamen, but this only lists men and women lost at sea (ie. with no known grave).
  29. Also expanded after Second World War, although the figure on this slide is only First World War losses. 25,564 names are commemorated on the three Royal Naval Memorials to the missing in Portsmouth, Plymouth and Chatham.
  30. Just First World War. It’s impossible to account for all men and women of the RFC or army lost at sea, but Hollybrook Memorial in Southampton lists 1,902 names of soldiers and airman with no known grave. Total numbers lost at sea (ie. no known grave): Chatham Naval Memorial: 8,558 Portsmouth Naval Memorial:  9,711 Plymouth Naval Memorial: 7,295 Royal Navy Total: 25,564 Hollybrook Memorial (Soldiers lost at sea): 1,902 Tower Hill Memorial (Merchant Navy): 12,185 Total Total:   39,651
  31. Not all those who died at sea were lost at sea. Many bodies were brought back on damaged warships and still more men and women died of their wounds after sea battles. Many of these casualties were buried on land.   Many merchant seamen are buried ashore; some may have died in land engagements, but this number is expected to be quite small. Charles Fryatt for example was captured at sea, executed by German soldiers in Belgium and reburied in England after the war.   The CWGC lists 50,059 Royal Naval servicemen who died during the war. However, not all of these died at sea. The Jack Clegg Memorial Database of Royal Naval Division Casualties of The Great War lists 10,231 men of the Royal Naval Division, the majority of whom will have died on land in places like the Western Front, Antwerp and Gallipoli. Subtracting this form the CWGC figure arrives at 39,828. 25,564 of these are commemorated on the three Royal Naval Memorials to the missing in Portsmouth, Plymouth and Chatham, suggesting approximately 14,200 Royal Navy servicemen who died at sea are buried ashore in Commonwealth War Graves. Merchant losses take the total to over 17,000.
  32. Total deaths in war at sea (rounded up): Royal Navy: 50,000 minus 10,200 =  39,800 Merchant Navy: 15,500 Other services: 1,900 Total: 57,200   A few considerations: These are commonwealth figures, not just Britain. Although the vast majority commemorated are men, some women appear on these memorials. Wilhelmina Burton, a stewardess on the South Western, is commemorated at Tower Hill for instance. Also, these are just WWI figures. The memorials also contain names from other wars, so the total number of names on each of the memorials is considerably higher.
  33. Statistics of the military effort of the British Empire during the Great War, 1914-1920, published by The War Office in 1920, gives figures obtained from a “report published by a Majority Socialist organ, Berlin, 6th January, 1920.” These give the following totals: Casualties in the Navy: 78,342, including 21,112 killed.
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