SM U-27 (Austria-Hungary) - Service Career

Service Career

After her completion, U-27 was commissioned into the Austro-Hungarian Navy on 24 February 1917 under the command of Linienschiffsleutnant Robert Teufl von Fernland. Previously in command of U-11, von Fernland was 31-year-old native of Vienna. In April, von Fernland and U-27 both achieved their first kills. On 12 April, U-27 encountered the 3,756-ton Greek steamship Niritos sailing from Genoa for Port Said. About 5 nautical miles (9.3 km) off Augusta, Sicily, U-27 shelled and sank the 11-year-old Greek ship. Four days later, von Fernland torpedoed another Greek steamer, the 2,976-ton Zinovia. Carrying coal from Barry for Taranto, Zinovia was sent to the bottom 5 nautical miles (9.3 km) from Cape Rizzuto.

In mid-May 1917, U-27 participated in a support role in a raid on the Otranto Barrage that precipitated the Battle of Otranto Straits. On the night of 14/15 May, the Austro-Hungarian cruisers Helgoland, Saida, and Novara attacked the drifters that deployed the anti-submarine nets that formed part of the Barrage, sinking 14, damaging 5, and taking 72 prisoners. Destroyers Csepel and Balaton were sent to simultaneously attack Italian transports shuttling between Italy and Valona, and sank an Italian destroyer and a munitions ship. U-27, which was assigned to patrol between Brindisi and Cattaro, was a part of a force of three U-boats intended to intercept British and Italian ships responding to the attacks; the other two were the Austro-Hungarian U-4 (which was posted near Valona) and the German UC-25 (assigned to mine Brindisi). A squadron of British cruisers and Italian and French destroyers joined the battle against the Austro-Hungarian cruisers on 15 May. Several ships on each side were damaged by the time the engagement was broken off. As a result of the attacks the drifter line of the Barrage was moved farther south and maintained only during the day, a success for the Central Powers. U-27 did not take any offensive action during the raid and ensuing battle.

On 9 June, U-27 sank Roland, a French sailing ship, off the Greek island of Cerigo. Two days later, von Fernland torpedoed the Japanese destroyer Sakaki between Cerigotto and Meles. Sakaki was one of eight Kaba-class destroyers that were part of the Japanese contribution to the Allied effort in the Mediterranean. Although the Japanese ships often performed escort service for British troop convoys, Helgason does not report whether Sakaki was engaged in that duty when she was attacked. Even though 68 Japanese sailors perished in the attack, nearly two-thirds the complement of a typical Kaba class ship, Sakaki remained afloat, was repaired, and remained in service. On 29 December, Linienschiffsleutnant Josef Holub replaced von Fernland as commander of U-27. Holub, a 32-year-old native of Galicia, had previously been in command of U-21 and U-22. Holub recorded his first victory with U-27 in January 1918. While near Marca, Sirocco, the U-boat torpedoed and sank the Italian steamer Andrea Costa on 22 January. The 3,991-ton Andrea Costa had sailed from Rangoon, but was sunk just short of her destination of Malta. A little more than four months would pass before Holub and U-27 would score their next success.

From late April to early May, U-27 sank six small ships—five Greek and one Italian—including three on one day, 6 May. All of the ships with reported tonnages were under 50 tons. U-27 torpedoed the British destroyer Phoenix at 09:18 on 14 May with the loss of one stoker and one artificer. Phoenix had been attached to the group of ships patrolling the Otranto Barrage when she was torpedoed amidships on the starboard side. Although she survived the initial attack, Phoenix was listing badly and taking on large quantities of water. An attempt was made by Australian destroyer Warrego to tow Phoenix to safety but by 12:45 she was in danger of capsizing and her crew were removed. Phoenix eventually sank at 13:10 in position 40°23′30″N 19°14′00″E / 40.39167°N 19.23333°E / 40.39167; 19.23333. From 3 to 11 July, U-27 sank another ten ships, the largest reported being the 67-ton sailing vessel Giuseppino Padre. U-27 dispatched three of the ships on 3 July, and sank two each on 10 and 11 July. On 13 August, U-27 attacked the 2,209-ton British steamer Anhui. The 15-year-old ship was en route from Famagusta to Port Said, when U-27 torpedoed her 2 nautical miles (3.7 km) off Crete. Four persons on Anhui died when the ship with her general cargo went down.

U-27's next victims were all encountered in mid-September. On 11 September, the French sailing ship Antoinette was seized as a prize and towed into the port of Beyrouth. Starting three days later, Holub and U-27 sent an additional ten small ships to the bottom, including the final six all on 20 September. Except for the two largest ships—the 113-ton Agios Nicolas and the 103-ton Theologos—none were over 60 tons.

At the war's end, U-27 was in port at Pola. The U-boat was surrendered to Italy as a war reparation in 1919 and was scrapped at Fiume in 1920. In addition to the sinking and damaging of two destroyers, she sank or captured 34 merchant ships totaling 14,386 GRT. Conway's All the World's Fighting Ships, 1906–1921 calls U-27 Austria-Hungary's "most successful submarine".