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Battle of the River Plate
Part of World War II
Scuttled Admiral Graf Spee
Date December 13, 1939 Location Off the River Plate estuary, South Atlantic. Result Allied victory (see here)
Combatants
Nazi Germany	United Kingdom New Zealand
Commanders
Hans Langsdorff	Henry Harwood
Strength
1 pocket battleship	1 heavy cruiser 2 light cruisers
Casualties
1 pocket battleship damaged 36 dead	1 heavy cruiser heavily damaged 2 light cruisers damaged 72 dead

Atlantic Campaign
River Plate – Altmark – SC-7 – HX-84 – HX-106 – Berlin – Denmark Strait – Bismarck – Mediterranean – Channel Dash – St. Lawrence – Laconia – PQ-17 – Barents Sea – North Cape

The Battle of the River Plate (December 13, 1939) was a naval battle in World War II. The German pocket battleship (heavy cruiser) Admiral Graf Spee had been commerce raiding since the start of the war in September. It was found and engaged off the estuary of the River Plate in South America by three smaller Royal Navy (RN) cruisers: HMS Exeter, HMS Ajax and HMS Achilles^[1], which was part of the RN's New Zealand Division.

In the ensuing battle, Exeter was severely damaged and forced to retire, while all other ships received moderate damage. Ajax and Achilles then shadowed the Graf Spee which entered the neutral Uruguayan capital Montevideo. After a tense period, the captain of the Graf Spee, Hans Langsdorff scuttled his ship rather than face the overwhelmingly superior British force that he believed had assembled.

Contents 1 Background 2 The battle 3 The pursuit 4 The trap of Montevideo 5 Aftermath 6 Salvage 7 Trivia 8 References 9 External links

The Admiral Graf Spee had been at sea at the start of the Second World War in September 1939 and had sunk several merchantmen in the Indian Ocean and South Atlantic Ocean without loss of life due to her captain's policy of taking all crews on board before sinking the victim.

The Royal Navy assembled forces to search for the surface raider. Force G, the South American Cruiser Squadron, comprised the heavy cruiser HMS Exeter (8,400 tonnes, six 8-inch (203 mm) guns) and two Leander class light cruisers (both 7,000 tons, eight 6-inch (152 mm) guns) — HMS Ajax and HMS Achilles. The force was commanded by Commodore Henry Harwood from Ajax, which was captained by Charles Woodhouse. Achilles was of the New Zealand Division (precursor to the Royal New Zealand Navy) and captained by Edward Parry. Exeter was captained by F.S. Bell. A County class heavy cruiser, HMS Cumberland (10,000 tons, eight 8-inch (203 mm) guns), was self-refitting in the Falkland Islands at the time but available at short notice.

Unable to divide his force, Harwood suspected that the raider would try to strike next at the merchant shipping off the River Plate estuary between Uruguay and Argentina. The three cruisers were convened off the estuary on 12 December and conducted manoeuvres.

At about 06:14 local time (GMT -2) on 13 December the ships sighted each other and closed. Admiral Graf Spee, despite having correctly identified Exeter, initially suspected that the two light cruisers were smaller destroyers and that the British ships were protecting a merchant convoy, the destruction of which would be a major prize.

The British executed their battle plan: Exeter turned to the north-west whilst Ajax and Achilles, operating together, turned to the north-east. Admiral Graf Spee opened fire with her six 11-inch (280 mm) guns at 06:18, eventually splitting her turrets between the two targets to the detriment of accurate gunnery, as the British had planned. Exeter opened fire at 06:20, Achilles at 06:21, Exeter's aft guns at 06:22 and Ajax at 06:23.

At 06:23 an 11-inch (280 mm) shell burst just short of Exeter, abreast the middle of the ship. Splinters from this shell killed the torpedo tubes' crews, damaged the ship's communications, and riddled the funnels and searchlights. One minute later Exeter suffered a direct hit. This shell struck her B-turret, putting it and its two guns out of action. Shrapnel swept the bridge, killing or wounding all bridge personnel except the captain and two others. Captain Bell's communications were wrecked. Communications from the aft conning position were also destroyed, and the ship had to be steered via a chain of messengers for the rest of the battle.

Meanwhile Ajax and Achilles had closed and started making in front of the Graf Spee, causing Admiral Graf Spee to split her main armament at 06:30, and otherwise using her 5.9-inch (150 mm) guns against them.

At 06:32 Exeter fired two torpedoes from her starboard tubes but both missed. At 06:37 Ajax launched her spotter aircraft from its catapult. At 06:38 Exeter turned so that she could fire her port torpedoes, and received two more direct hits from 11-inch shells. One hit A-turret and put it out of action, the other entered the hull and started fires. At this point Exeter was severely damaged, having only Y-turret in action, a seven degree list, was being flooded and being steered with the use of her small boat's compass.

At 06:40 an 11-inch shell burst just short of Achilles, in line with the bridge, damaging her and causing a few casualties, However, gunnery continued from the secondary control position. At about this time Admiral Graf Spee turned to the west under the cover of a smokescreen. The light cruisers were now doing about 31 knots, having worked up to speed from 14 knots initially.

At 06:56, Ajax and Achilles turned to starboard to bring all their guns to bear, causing at 07:10 Admiral Graf Spee to turn away and lay a smokescreen. At 07:10 the two light cruisers turned to reduce the range from 8 miles (13 km), even though this meant only their forward guns could fire.

At 07:16 Admiral Graf Spee turned to port and headed straight for the heavily damaged Exeter, but fire from Ajax and Achilles forced the Graf Spee at 07:20 to turn and fire her 11-inch guns at them, who turned to starboard to bring all their guns to bear.

Ajax turned to starboard at 07:24 and fired her torpedoes at a range of 4.5 miles (7 km), causing Admiral Graf Spee to turn away under a smokescreen.

At 07:25 Ajax was hit by an 11-inch shell that put X-turret out of action and jammed Y-turret, causing some casualties.

At 07:30 Exeter's remaining turret was put out of action by loss of electrical power caused by flooding. Severely damaged, unable to fire and keep up with the action, Exeter broke off at about 07:40 and steamed slowly towards the Falklands.

By 07:40, Ajax and Achilles were running low on ammunition and the British decided to change tactics, moving to the east under a smokescreen. Harwood decided to shadow Admiral Graf Spee and try to attack at night when he could attack with torpedoes and better utilise his advantage of speed and manoeuvrability while minimising his deficiencies in armour. Ajax was again hit by an 11-inch shell that destroyed her mast and caused some casualties. Admiral Graf Spee continued on a westward course.

The battle now turned into a pursuit. The British and New Zealand cruisers split up keeping about 15 miles (24 km) from Admiral Graf Spee, Ajax keeping to the German's port and Achilles to the starboard.

At 09:15 Ajax recovered her aircraft. At 09:46 Harwood signalled to Cumberland for reinforcements and the Admiralty also ordered ships within 3,000 miles (5,000 km) to proceed to the River Plate.

At 10:05 Achilles had overestimated the Graf Spee's speed and came into range of German guns. Admiral Graf Spee turned and fired two three-gun salvoes with her foreguns. Achilles turned away under a smokescreen.

The shadowing continued for the rest of the day until 19:15, when Admiral Graf Spee turned and opened fire on Ajax, who turned away under a smokescreen.

It was now clear that Admiral Graf Spee was entering the River Plate. As the estuary had sandbanks, Harwood ordered Achilles to shadow Admiral Graf Spee while Ajax would cover any attempt to double back through a different channel.

The sun set at 20:48 with the Admiral Graf Spee silhouetted against the sun. Achilles had again closed the range and Admiral Graf Spee opened fire, Achilles turning away. During the battle a total of 108 men had been killed on the two sides, including 36 on Admiral Graf Spee.

The Graf Spee entered Montevideo in neutral Uruguay and dropped anchor at about 00:10 on the 14 December. This was a political error, as Uruguay, while neutral, had benefited from significant British influence during its development and favoured the Allies. The British Hospital, for example (where the wounded from the battle were taken) was the leading hospital in Montevideo. If the Graf Spee had left port again, the damaged Ajax and the Achilles would have been the only Commonwealth warships it would have encountered in the area.

In Montevideo, the 13th Hague Convention came into play. Under Article 2, "...belligerent war-ships are not permitted to remain in the ports, roadsteads, or territorial waters of the said Power for more than twenty-four hours...", modified by Article 14 "A belligerent war-ship may not prolong its stay in a neutral port beyond the permissible time except on account of damage..." British diplomats duly pressed for the speedy departure of the Graf Spee. Also relevant was Article 16, of which part reads, "A belligerent war-ship may not leave a neutral port or roadstead until twenty-four hours after the departure of a merchant ship flying the flag of its adversary."

The Germans released 61 captive British merchant seamen who had been on board. Langsdorff then asked the Uruguayan government for two weeks to make repairs. Initially, the British diplomats in Uruguay, principally Eugen Millington-Drake, tried to have Admiral Graf Spee forced to leave port immediately. After consultation with London, which was aware that there were no significant British naval forces in the area, they continued to openly demand that the Graf Spee leave. At the same time, they secretly arranged for British merchant ships to sail from Montevideo at intervals of 24 hours, whether they had originally intended to or not, thus invoking Article 16. This kept the Graf Spee in port and allowed more time for British forces to reach the area.

At the same time, efforts were made by the British to feed false intelligence to the Germans that an overwhelming British force was being assembled, including the aircraft carrier HMS Ark Royal and the battlecruiser HMS Renown, when in fact only the heavy cruiser HMS Cumberland was nearby. Cumberland, one of the earlier County class, was only a little more powerful than Exeter, with two more 8-inch (203 mm) guns; she was no match alone for Admiral Graf Spee, whose 11-inch guns had longer range and fired much heavier shells. Cumberland arrived at 22:00 on 14 December after steaming at full speed for 36 hours from the Falkland Islands. Overwhelming British forces (HMS Renown, Ark Royal, Shropshire, Dorsetshire and Neptune) were en route, but would not assemble until December 19. For the time being, the total force comprised the undamaged Cumberland and damaged Ajax and Achilles.

The Germans, however, were entirely deceived, and expected to face a far superior force on leaving the River Plate. The Graf Spee had also used two-thirds of her 11" ammunition and only had enough left for approximately a further 20 minutes of firing, which was hardly enough to fight her way out of Montevideo, let alone get back to Germany.

Intense negotiations were undertaken. While the ship was prevented from leaving the harbour, Captain Langsdorff consulted with his command in Germany. He received orders that permitted various options, but not internment in Uruguay. Ultimately he chose to scuttle his ship in the River Plate estuary (December 17) to avoid unnecessary loss of life for no military advantage, a decision that is said to have infuriated Hitler. The crew of Admiral Graf Spee was taken to Buenos Aires, where Captain Langsdorff subsequently committed suicide on 19 December. He was buried there with full military honours and several British officers attended. But, lots of the crew members were reported to have moved to Montevideo with the help of local people of German origin. The German dead were buried in the "Cementerio del Norte" in Montevideo.

The German propaganda machine had reported that Admiral Graf Spee had sunk a heavy cruiser and heavily damaged two light cruisers while only being lightly damaged herself. (This had a degree of truth in it - Exeter had been seriously damaged and was practically a hulk, while Admiral Graf Spee's damage was superficial rather than structural). Admiral Graf Spee's scuttling however was a severe embarrassment and difficult to explain. The Battle of the River Plate was a contributory factor to Adolf Hitler's low opinion of the German surface fleet. The battle was a major propaganda victory for the British during the Phony War, and the reputation of First Lord of the Admiralty Winston Churchill was enhanced.

Exeter limped to the Falkland Islands for emergency repairs and later to Devonport for a 13-month refit.

Prisoners taken from merchant ships by Admiral Graf Spee who had been transferred to her supply ship Altmark were freed by a boarding party from the British destroyer HMS Cossack, in the Altmark Incident (February 16, 1940) — whilst in Jøssingfjord, at the time neutral Norwegian waters. Prisoners who had not been transferred to Altmark had remained aboard Graf Spee during the battle, and were released on arrival in Montevideo.

On 22 December 1939 over 1,000 sailors from the Admiral Graf Spee were taken to Buenos Aires, Argentina, and interned there; at least 92 were transferred during 1940 to a camp in Rosario, and another group to Villa General Belgrano, a small town founded by German immigrants in 1932. Some of these sailors later settled there. [1] There are many stories, but little reliable information, about their later wartime activities, including escapees illegally returning to the German armed forces, espionage, and clandestine German submarine landings in Argentina. After the war many German sailors settled permanently in various parts of Uruguay, some returning after being repatriated to Germany. Rows of simple crosses in a cemetery near the river mark the burial places of the German dead. The British dead are buried in the British Cemetery, in Montevideo.

Plans to raise the wreck are discussed in the article on Admiral Graf Spee .

Immediately after her scuttling the wreck of the Admiral Graf Spee rested in shallow water with much of the ship's superstructure remaining above water level, but over the years the wreck subsided into the muddy bottom and today only the tip of the mast remains above the surface.

The first salvage from the ship was most likely carried out by Royal Navy intelligence teams which recovered the highly advanced Seetakt radar not destroyed in the scuttling. In February 1940 the wreck was boarded by US Navy sailors from the light cruiser USS Helena.

In 1997, one of Admiral Graf Spee's 15 cm secondary gun mounts was raised and restored; it can now be seen outside Montevideo's National Maritime Museum.

In February 2004 a salvage team began work raising the wreck of the Admiral Graf Spee. The operation is in part being funded by the government of Uruguay, in part by the private sector, as the wreck is now a hazard to navigation. The first major section, the 27-ton heavy gunnery control station, was raised on 25 February 2004. It is expected to take several years to raise the entire wreck. Film director James Cameron is filming the salvage operation. After it has been raised, it is planned that the ship will be restored and put on display at the National Marine Museum in Montevideo.

Many German veterans do not approve of this restoration attempt, as they consider the wreck to be a war grave and an underwater historical monument that should be respected. One of them, Hans Eupel, former specialist torpedo mechanic, 87 years old in 2005, added "this is madness, too expensive, and senseless. It is also dangerous, as one of the three explosive charges we placed did not explode."

On 10 February 2006, the eagle figurehead of the Admiral Graf Spee was recovered. To protect the feelings of those sensitive to Nazi Germany, the swastika on the figurehead was covered as it was pulled from the water.

In 1956 the film The Battle of the River Plate (U.S. title: Pursuit of the Graf Spee) was made of the battle and Admiral Graf Spee’s end. HMS Achilles, which had been recommissioned in 1948 as HMIS Delhi, flagship of the Royal Indian Navy, played herself in the movie.

The battle is re-enacted with large-scale model boats throughout the summer season in the UK seaside resort of Scarborough.

After the battle, the Town of Ajax, Ontario in Canada, was named after HMS Ajax . Many of its streets are named after Admiral Harwood's crewmen on Ajax, Exeter and Achilles.

• Grafspee.com
• History learning site articles with much detail on The Battle of the River Plate and Admiral Graf Spee in Montevideo
• Jilani, Capt(Retd) AA (December 1999) "The Battle of the River Plate" in Defence Journal
• Official HMSO report
• (Spanish) "The crew of the Graf Spee" — Largely anecdotal information on activities of the interned crew after the battle.
• (Spanish) Laurence, Ricardo E. (2000). Tripulantes del Graf Spee en tres atrapantes historias. ISBN 987-43-1754-X. 
• 13th Hague Convention (Convention Concerning the Rights and Duties of Neutral Powers in Naval War)