Chapter 13: The first happy time
In March 1917 2 parties of three German cruisers, the SMS Pillau, Frankfurt and Königsberg as well as Karlsruhe, Nürnberg and Emden once again fell upon the Northern patrol, in this case sinking two British cruisers before falling back against opposing battleships. Three German Colliers used the confusion to escape north, although one was apprehended and scuttled by the crew. Then once again on the 1st of April the raiders went North and this time they were undetected. Van der Tann and Hindenburg were the flagships and Königsberg, Karlsruhe, Nürnberg, Emden (all 8x15 cm guns), Magdeburg, Stralsund and Stralsburg (10x10.5 cm guns) as escorts and scouts. The ships passed through the Denmark Strait on the 10th of April and immediately created Havoc, even as the British were once again assembling their shipping into large convoys. The raiders split up in two task forces that were not far apart and they sunk 200000 tons of shipping for the reminder of April. In May, things become more dangerous because the convoys had formed and the US were contributing their sizeable fleet to the battles. On one occasion, the task forces left a convoy alone which were escorted by 3 British battleships, but directed U-boats to is position which sank 11 ships in the first factual if uncoordinated wolf-pack attack.
On another occasion, when an exceptionally large convoy was encountered sceened by 8 destroyers, 3 cruisers and the battleships Florida and Alabama (pre-dreadnought) it was decided to engage. The engagement would turn out to be a pivotal learning experience, if not bloody for both sides. The Germans dispatched the cruisers Magdeburg, Stralsund and Stralsburg (10x10.5 cm guns) to outflank the convoy and prevent the escape of scattering ships and then attacked in the late morning with the sun in their rear on a northern course with a North easterly angle to the American battleships. With optimal shooting conditions it was exploited that Hindenburg had been modified for increased range and could start shooting at 18 km’s of range and Van der Tann had been made capable of shooting at 20 km’s of range. Florida could in principle fire at the same range, and did so, but did not have equivalent range finding equipment. Consequently, a few salvo’s after the battle commenced, shells from first Van der Tann and then Hindenburg straddled US Florida. Not long after, a shell from Hindenburg, fired close to the maximum range penetrated the armored deck on Florida and entered the port side engine room. Splinter damage and vibration caused a flooding, a pronounced list and loss of electrical power for the starboard pumps. This penetrating hit and the ensuing list to starboard, was penetrating at the edge of what was possible even with the thin 45 mm armor, but it subsequently exposed the deck of Florida at an even more favorable angle for penetrating hits. Seven more hits were scored on Florida as the range closed to 14 km including 3 more deck penetrating hits hitting the boiler rooms, the steering equipment aft and close to the B turret jamming it. USS Florida was now clearly sinking and the Germans turned attention to Alabama. This might have been a minute too soon, as Florida next manage a hit on Van der Tann directly into the bridge, killing the captain and most officers on deck with splinter damage. That aside, the Germans wasted no time closing the range and sinking the Alabama, but took two large caliber hits in return, and they send in the cruisers to dispatch the smaller escorts.
After a whole day of fighting and hunting of fleeing merchants, the scale of the disaster could be estimated. The US had lost two battleships (one pre-dreadnought), 2 cruisers, 4 destroyers and 36 merchant of a total of ~50000 tons of warships and 175000 tons of merchant shipping. The Germans had lost Karlsruhe to a torpedo hit, and Van der Tann had lost most of its officers. Two preserve the fighting capability of the squadron, the German task force returned for home waters and would not be able to sortie before June of 1917.
Adding in the submarine campaign, the British suffered a disasterous loss of 1060000 tons of Merchant shipping in April and 775000 tons in May of 2017. However, the outcome, even off massive successes, highlighted the German problems with sustaining a surface raider campaign.
Edit:1917 for 2017.
Heavy deleted in heavy cruiser.