On 15 May 1917 three Austro-Hungarian light cruisers attacked a force of drifters that were patrolling the Straits of Otranto in order to prevent Austro-Hungarian and German U-boats breaking out from their bases in the Adriatic into the Mediterranean.
The drifter Gowan Lea, with a crew of eight men and a dog and armed with only a 6 pounder gun and depth charges, attacked the Austro-Hungarian cruiser Novara, which had a crew of 318, nine 3.9 inch and one 47mm guns and four 17.7 torpedo tubes. Gowan Lea’s skipper, Joseph Watt was awarded the VC. He was born in Gardenstown, Banffshire and in peacetime skippered a Fraserburgh drifter. His vessel survived; its only casualty was the dog, who suffered shock and died three days later. Watt’s VC, Italian Al Valore Militare and French Croix de Guerre were sold by the auctioneer Spink for £204,000 on 19 April 2012; see the BBC website. I think that the purchaser will have paid £170,000 with a 20% fee to the auctioneer added on. The previous day’s Scotsman reported that the citation for Watt’s VC read:
Skipper Joseph Watt, Royal Naval Reserve.
For most conspicuous gallantry when the Allied Drifter line in the Straits of Otranto was attacked by Austrian light cruisers on the morning of 15 May, 1917. When hailed by an Austrian cruiser at about 100 yards range and ordered to stop and abandon his drifter the “Gowan Lea” Skipper Watt ordered full speed ahead and called upon his crew to give three cheers and fight to the finish. The cruiser was then engaged, but after one round had been fired, a shot from the enemy disabled the breech of the drifter’s gun. The gun’s crew, however, stuck to the gun, endeavouring to make it work, being under heavy fire all the time. After the cruiser had passed on Skipper Watt took the “Gowan Lea” alongside the badly damaged freighter “Floandi” and assisted to remove the dead and wounded.
According to this website on the VC, one Victoria Cross; two Distinguished Service Orders; six Distinguished Service Crosses; five Conspicuous Gallantry Medals; eighteen Distinguished Service Medals; and 31 Mentioned-in-Despatches were awarded for the action; see the London Gazette for the list of recipients. Thanks to poster Michaeldr of the Great War Forum for the link to the London Gazette.
Most of these awards were made to the drifter crews, but some went to the crews of the cruisers HMS Dartmouth and HMS Bristol, which participated in the later stages of the Battle of the Otranto Straits. Deckhand Frederick Lamb of the Gowan Lea received the CGM for continuing to fire her gun despite being wounded. Watt’s entry in Wikipedia, says that three other members of the Gowan Lea’s crew received the CGM or the DSM. Since the London Gazette gives the citations for awards of the CGM but just lists recipients of the DSM, this is presumably Lamb’s CGM and two awards of the DSM.
The Otranto Barrage consisted of a line of drifters, mostly British, which were intended to trap enemy submarines that could then be attacked with depth charges. There were not enough drifters to have a continuous line and submarines could evade the line; in 1916 most passed it on the surface at night. In July 1916 there were supposed to be 50 drifters at sea, but a French officer reported that there were only 37, of which only 10 had their nets out. Strong currents meant that the drifters would move apart. Rear Admiral Mark Kerr, commander-in-chief of the British Adriatic Squadron, thought that 300 drifters were needed.
Only one submarine, the Austro-Hungarian U6 on 13 May 1916 was definitely destroyed by the Otranto Barrage. Two others were lost to unknown causes and may have fallen victim to it; the German UB44 in August 1916 and the Austro-Hungarian U30 in April 1917.
The Austro-Hungarians made several attacks on the Barrage; the one on 14-15 May 1917 was the largest. It was led by Captain Miklos Horthy of the Novara, which was accompanied by her sister ships the Helgoland and the Saida. They were modified to make them look like British destroyers from a distance. Two Tatra class destroyers, the Csepel and Balaton, would carry out a diversionary attack. Two Austro-Hungarian submarines, the U4 and U27, and a German minelaying submarine, the UC25, also took part.
The two Austro-Hungarian destroyers attacked a convoy, sinking the Italian destroyer Borea and a munitions ship, and damaging the other two ships in the convoy, one of which was set on fire. For some reason, they did not finish off the damaged ships, which both made port. The drifters were being screened by the Italian flotilla leader Mirabello and the French destroyers Commandant Riviere, Bisson and Cimeterre. The destroyer Boutefeu had returned to port with condenser problems.
Horthy’s cruisers evaded this force and two Allied submarines and attacked the drifters. They used their sirens to warn the almost defenceless drifters of their presence, giving their crews an opportunity to abandon ship, which the Gowan Lea did not take. Other drifters also resisted.
According to the British official history, Floandi, described as a freighter in Watt’s VC citation, was a drifter which fired on the Novara. Skipper D. J. Nicholls and one of her enginemen were wounded, with the other engineman being killed. The crew of the Admirable, next to the Gowan Lea in the line,abandoned ship, but one man returned to her. He tried to man the gun but was killed before he could fire.
The Austro-Hungarians sank 14 drifters out of 47 and damaged four, three seriously. They rescued 72 of the drifters’ crews before heading back to their base at Cattaro, but they were 40 miles further from it than from the Allied base at Brindisi.
The attack on the convoy began at 3:24 am and that on drifters at 3:30 am. At 4:35 am Rear Admiral Alfredo Acton, commander of the Italian Scouting Division, ordered the Mirabello destroyer force to intercept the Austrians. It took some time until other Allied ships were ready to sail, but the British light cruisers Dartmouth, flying Acton’s flag, and Bristol, the Italian flotilla leader Aquila and the Italian destroyers Mosto, Pilo, Schiaffino and Acerbi set sail at 6:45 am. Acton did not order the Italian light cruiser Marsala and four more destroyers to sea until 8:25 am, an hour after they were ready.
The Mirabello group contacted the Horthy’s cruisers at 7:00 am, but the French destroyers struggled to keep up. Acton’s force intercepted the Austro-Hungarian destroyers at 07:45. The Austro-Hungarians escaped after disabling the Aquila.
Acton was now between Horthy and Cattaro and the two forces spotted each other at 9:00 am. Dartmouth (eight 6 inch guns) and Bristol (two 6 inch and 10 4 inch guns) outgunned the three Austro-Hungarian cruisers (nine 3.9 inch guns each), but Acton’s force was being whittled down. Pilo and Schiaffino remained with Aquila, Mirabello had problems with her fuel supply and Commandant Riviere broke down at 11:45; Bisson and Cimeterre stayed to escort her. Bristol’s bottom was fouled, and she dropped behind the other cruisers.
Horthy’s cruisers were able to concentrate on Dartmouth, so Acton slowed her to allow Bristol to catch up. Between 10:30 and 11:00 am Dartmouth damaged Novara, but Acton decided to concentrate on Saida, which was lagging the other two Austrian cruisers, which had drawn ahead of the British ships. Marsala and her destroyers had now arrived.
Saida was not badly hit, but Novara had now stopped. However, Austro-Hungarian reinforcements, including a heavy cruiser had now appeared, so at noon Acton headed back to Brindisi. On the way there, UC25 torpedoed Dartmouth and the Boutefeu, which had come out to assist her, struck one of the mines laid by UC25 and sank.
Aircraft from both sides were present. The Austrians got the better of the Italians, and their aircraft were able to spot for their destroyers. The Austrians bombed and strafed the British cruisers but did not damage them.
The action was clearly a success for the Austrians. The multi-national Allied force had suffered from signalling problems. It was clear that the drifters could not be protected at night unless more destroyers were available, which they were not. consequently, the barrage was maintained only during the day.
As Paul Halpern points out, the action made little strategic difference. The major Austro-Hungarian warships were still confined to port, and the threat to Allied shipping in the Mediterranean continued to come from submarines. Horthy had risked three of the best Austro-Hungarian warships in order to attack an ineffective blockade.
The big gainer from the Battle of the Otranto Straits was Horthy himself. He was promoted to Rear Admiral and made commander-in-chief of the Austro-Hungarian Navy in March 1918. He was Regent of Hungary from 1920-44.
Skipper Joseph Watts returned to the fishing fleet after the war. The Scotsman quoted a spokeswomen for Spink, the auctioneers who sold his medals, as saying that:
“His Victoria Cross, so bravely earned, was kept in a small drawer on his boat, amidst the accumulated junk of a sailor’s life. Joseph Watt died at home in Fraserburgh from cancer of the gullet on 13 February, 1955, and was buried alongside his wife in Kirktown Cemetery. His loss was felt all over the North-east fishing communities with deep regret.”
 Henry Newbolt, Naval Operations, vol. iv (London: HMSO, 1938), p. 300.
 P. G. Halpern, A Naval History of World War I (London: UCL Press, 1994), p. 166.