Auxiliary Cruiser | Prizes Taken | GRT |
Kronprinz Wilhelm | 15 | 58201 |
Prinz Rupert/ Prinzessin Charlotte | 19 | 49500 |
Prinz Eitel Freidrich | 11 | 33423 |
Niagara | 8 | 29900 |
Kaiser Wilhelm der Grosse | 3 | 10685 |
Berlin | 0 | 0 |
Cap Trafalgar | 0 | 0 |
Cormoran | 0 | 0 |
Vineta | 0 | 0 |
Part 2: The Liners
Kronprinz Wilhelm
Kronprinz Wilhelm was the most successful of the big, fast German liners converted to merchant raider. The Royal Navy was concerned about the threat this kind of vessel could present to the British merchant marine since fast liners came into existence, and had included them in the design considerations for their trade protection cruisers for decades. The Royal Navy also sponsored British liners to be built to Admiralty Specifications so that they could be quickly converted to armed merchant cruisers to counter foreign threat in a trade war.
Karlsruhe’s former navigation officer Kapitänleutnant Paul Thierfelder captained
Kronprinz Wilhelm to take 15 prizes for a total of 58,201 GRT, in an 8 month voyage that left one quarter of the crew incapacitated by scurvy. The ship haunted the South Atlantic off Brazil and Argentina, but does not seem to have provoked a strong response of Royal Navy cruisers tasked to catch her, and caused no shipping stops.
Kronprinz Wilhelm’s success challenges one of the assumptions of Hilfskreuzer design: the ship was the most lightly armed of all the German raiders, she had only 2 x 8.8 cm guns. Later, she captured 2 x 4.7 inch guns from a defensively armed British liner, but these guns had no ammunition, and were only used for drill and to fire blank warning shots. Thierfelder used his ship’s great bulk and superior speed to intimidate merchants, and sank most by scuttling charge. At one point,
Kronprinz Wilhelm sank a sailing freighter by ramming, cutting the ship completely in half.
Thierfelder had an opportunity to alter history slightly, when
Kronprinz Wilhelm arrived on the scene of the Battle of Trindade Island, just after the German raider
SMS Cap Trafalgar had sunk, and the armed merchant cruiser
HMS Carmania was badly damaged and in near sinking condition.
Kronprinz Wilhelm could have finished off
Carmania, but Thierfelder took the cautions path, knowing that other Royal Navy cruisers were on their way. After 8 months of raiding, running low on coal and with the engines in deteriorating condition, Thierfelder ran a British blockade to intern at Newport News Virginia on April 10, 1915.
Prinz Rupert and Prinzessin Charlotte
Prinz Rupert, formerly the Canadian Grand Trunk Pacific Railway coastal liner
Prince Rupert, was captured by
Nürnberg August 16. The coastal liner was expediently fitted out to act as an armed auxiliary to
Nürnberg, under the command of Lieutenant Otto Von Spee, younger son of Admiral Graf Maximillian Von Spee. After taking several prizes,
Prinz Rupert was badly damaged in a close-range battle with the Russian naval supply ship
Anadyr in the harbour of Prince Rupert, British Columbia. Von Spee took the damaged ship and captured a coastal liner of a competitor, the Canadian Pacific Railroad’s
Princess Charlotte, which became the
Prinzessin Charlotte. Between them the commandeered liners sank 19 vessels, totalling 49,500 GRT.
The voyage of the
Prinz Rupert and
Prinzessin Charlotte is unique among German commerce raiders, happening entirely within inland waterways. The ships were lightly armed, only with 5.2 cm guns from Nürnberg’s secondary armament and 3.7cm pom-poms, as well as machine guns. The
Prinz/Prinzessin sank no merchant prizes by gunfire, all ships were boarded and sunk by scuttling charge, or scuttled by their own side to avoid capture, or in one spectacular case,
SS Marama was accidentally run aground at high speed while fleeing to avoid capture.
Prinz Rupert did use her guns in a battle with the Russian
Anadyr, and
Prinzessin Charlotte used her guns suppressing rifle fire from shore at Swanson Bay and Ladysmith, bombarding an explosives factory, and returning fire on two Canadian submarines that attacked her. Von Spee junior caused a great deal of damage to industry on shore, being involved in the demolition of two pulp mills, a coal loading facility, the aforementioned explosives factory, an abandoned copper mill, and two cement plants.
Like the other two cruisers involved in the actions in British Columbia, Von Spee was lucky, but not extraordinarily so. He did have the services of a local pilot, to get keep him from running aground in the narrow channels, which helped a great deal. He also was helped in this regard by the density of enemy merchant shipping in the waters of Georgia Strait. But his luck eventually ran out, the bow of
Prinzessin Charlotte was blown off by torpedo in a submarine ambush, and Von Spee interned his ship and crew in American waters.
Prinz Eitel Friedrich
Prinz Eitel Friedrich was fitted out at Tsingtao in 6 days, armed with 4 x 10.5cm and 6 x 8.8 cm guns from the gunboats stationed there. Her commander, Korvettenkapitän Max Thierichens, followed a similar course as Admiral Von Spee across the Pacific, meeting with Von Spee senior several times, but operated mostly independently.
Prinz Eitel Friedrich captured prizes in the Pacific and Atlantic, 11 vessels totalling 33,423 GRT. Thierichens chose a different strategy that Von Spee and the light cruisers did crossing from the Pacific to the Atlantic.
Prinz Eitel Friedrich travelled far to the south of Cape Horn, avoiding shipping routes, and arrived in the Atlantic without encountering any Entente warships. After wearing out her engines and with bunkers almost empty, March 11, 1915, Thierichens interned at Newport News, Virginia.
Niagara
Kaptitan zur See Karl Von Schönberg changed horses to
Niagara after
Nürnberg had become too damaged in the Battle of Esquimalt to continue. The conversion of
Niagara to an armed auxiliary cruiser, in an all-night work party by a crew already exhausted by a whole day of combat, was made possible by
Niagara’s construction to Admiralty Specifications. The decks were already reinforced to receive guns heavier than
Nürnberg’s, so the deck plates only needed to be drilled for the gun mounts to be bolted down.
Taken by herself, the accomplishments of
Niagara are unremarkable. Her prize tonnage falls near the middle for the armed liners, and towards the bottom of the pack for the warships. As an extension of the voyage of
Nürnberg, Niagara’s rapid conversion and departure on another leg of a commerce warfare foray is remarkable, and a testament to the tenacity of her captain.
Von Schönberg chose correctly to target the Chilean nitrate trade as the best place to apply pressure to the British arms industry, and it happened to be within
Niagara’s range. As fate had it, the allied merchants were mostly held in port by shipping stops in response to the presence of
Leipzig, and to the British loss at the Battle of Coronel, so
Niagara did not find as many prizes as she might have in other circumstances. But, strategically, stopping a ship from leaving port had the same short-term effect as capturing the ship, so
Niagara was reinforcing an already effective cruiser warfare campaign.
Kaiser Wilhelm der Grosse
The Norddeutcher Lloyd liner
Kaiser Wilhelm der Grosse, sister ship of
Kronprinz Wilhelm, was converted to an armed auxiliary cruiser in Germany with 6 x 10.5 cm guns. Unlike most of the German armed liners, which were expediently fitted out overseas,
Kaiser Wilhelm der Grosse embodied the worst fears of the Royal Navy, a fast liner properly fitted out as a commerce raider in a German shipyard. Her Captain Reymann broke through the Royal Navy blockade at the start of the war, via Norwegian waters and the Greenland-Iceland gap.
Reymann took 3 prizes for a total of 10,685 GRT. Two prizes were steam freighters, one was a fishing trawler of a mere 227 tons.
Kaiser Wilhelm der Grosse also stopped two more British liners, but Reymann let them go when he discovered their passengers included many women and children.
Kaiser Wilhelm der Grosse met her colliers in neutral Spanish waters at the Rio de Oro colony on the west coast of Africa. Reymann overstayed his permissible time in neutral waters by 9 days, so when
HMS Highflyer arrived August 26 and interrupted the coaling, it was with the knowledge that the Germans had already violated Spanish neutrality. The German ships were at anchor, with no steam up. The captain of
Highflyer ordered Reymann to surrender, he refused, and a long range gun battle was fought, with both sides shooting so poorly that they exhausted their ammunition supplies. At this point, depending on the account,
Kaiser Wilhelm der Grosse was either so damaged that she sank, or she was scuttled by her crew.
Thus the commerce raiding voyage of
Kaiser Wilhelm der Grosse ended, after 3 weeks, with her sinking less Entente merchant shipping than her own GRT. Could she have performed better? Certainly. Could she have performed worse? Hardly.
Cap Trafalgar
The Hamburg South America liner
Cap Trafalgar was in Argentina when war was declared. She rendezvoused at Trindade Island, in Brazil, with the gunboat
Eber, that steamed across from German South West Africa.
Eber transferred her armament of 2 x 10.5 cm guns, ammunition, and some crew to
Cap Trafalgar.
Eber, disarmed, then interned in Brazil. No sooner had the conversion been completed than the armed merchant cruiser
HMS Carmania appeared, and the two liners fought to a bloody draw, with
Cap Trafalgar sinking, and
Carmania in near sinking condition.
Kronprinz Wilhelm appeared at this point, drawn by
Cap Trafalgar’s wireless messages, but captain Thierfelder decided to leave again, rather than finish off Carmania and risk being caught by Royal Navy cruisers in the area.
Carmania was in such rough shape at this point that she needed immediate assistance from
HMS Bristol and
Cornwall, and so the Royal Navy cruisers were tied up escorting
Carmania, rather than chasing her colliers down or hunting for
Kronprinz Wilhelm.
Cap Trafalgar took no prizes, and
Carmania was repaired and continued serving as an armed merchant cruiser until the end of the war.
Cap Trafalgar’s net contribution to the war effort seemed to be forcing the dock facilities at Gibraltar to spend a month repairing
Carmania. The Battle of Trindade Island was brutal, but often occupies popular histories as a comedic odd-spot, and eerily presages the portion of the Battle of the Galapagos Islands between
Niagara and
HMS Orama.
Cormoran
Emden captured the Russian mail liner
Ryazan on the first day of the war, and brought her back to Tsingtao. There, the guns were taken off the dilapidated
Bussard class unarmoured cruiser
Cormoran, a sister of
Geier, and
Ryazan was converted to the armed auxiliary cruiser
Cormoran II, although the II suffix was soon dropped. With 8 x 10.5 cm guns,
Cormoran became the most heavily armed of the German armed liners. The ship passed through a typhoon before meeting with Von Spee’s main force at the German colony of Majuro Island. Her captain Adalbert Zuckschwert was ordered to engage in commerce warfare off Australia, which Zuckschwert interpreted to be the seas surrounding the German Pacific colonies of The Solomons, New Guinea, and the Carolines.
Cormoran’s hunting grounds thus became the same waters that ANZAC forces were using to invade the colonies, and
Cormoran’s attention was split between hunting merchants and avoiding Entente warships. She ended up taking not a single prize. The entry of Japan into the war on August 23 only increased the danger from Entente warships, and
Cormoran sought shelter at the American territory of Guam when she was out of coal. The Americans refused to sell the Germans coal, and
Cormoran could not leave with no coal, so she existed in Guam in a limbo between liberty and internment until the United States entered the war in 1917.
Berlin
The Norddeutcher Lloyd liner Berlin was fitted out as an armed merchant cruiser and auxiliary mine layer in Germany, and sailed in September. Berlin laid a minefield off the east coast of the British Isles, then was damaged in a storm. Her captain lost his nerve and interned in Norway. The only reason this ship is mentioned here is that one of her mines sank the brand-new
King George V class super-dreadnought
HMS Audacious.
Audacious was the only ship of military significance sunk by a German surface raider in World War One.
The loss of
Audacious, on October 27, and then the dispatch of the battlecruisers
Invincible and
Inflexible to the South Atlantic in response to the Battle of Coronel which happened five days later, started to achieve the strategic effect that the German Admiralty was hoping for, attriting the Royal Navy capital ships down to a level where the High Seas Fleet could meet them on advantageous terms. However, Germany was unable to expand on this attrition, and unable to capitalize on the opportunity.
Vineta
The Hamburg South America liner
Cap Polonio was converted to the armed auxiliary cruiser
Vineta in Germany. Only after the conversion was complete did the Navy decide that with inferior coal the ship would be too slow for her mission, and she never left port.
A question that comes up, when looking at the combat effectiveness of the armed merchant raiders is, who are the vessels armed against? The most successful of the armed liners was Kronprinz Wilhelm, the most lightly armed. And Kronprinz Wilhelm only used her guns to fire warning shots. With the exception of Prinz Rupert and Prinzessin Charlotte, who were operating in inland waters, none of the liners used their guns against merchants for much more than speeding along the demise of prizes that had or could have been scuttled with explosive charges.
When the liners
Niagara, Prinz Rupert and
Cap Trafalgar did fire their guns in anger it was in a mutually destructive battle with another armed merchant cruiser, that would inevitably ended the mission of the German raider if it managed to be the one that remained barely afloat at the end of the exchange. All of the battles between German merchant raiders and Entente warships ended decisively with the warships victorious as one would expect. Möwe did have two battles with defensively armed merchant ships, and she won those both, while taking damage that stopped short of being career ending.
Prinzessin Charlotte fired at a surface submarine and managed to force it to dive.
I suggest that the arming of merchants to transform them into commerce raiders was a
pro forma exercise, A thing that one simply must do to be taken seriously, similar to a bank robber producing a note saying “I have a gun,” even though the actual utility of the armament was minimal.