page_title: SM UB-10
section_title: August 1915
hierarchical_section_title: SM UB-10 / Early career / August 1915
caption_attribution_description: English: A sailing smack photographed near Brightlingsea, Essex, England. June, 2006
context_page_description: SM UB-10 was a German Type UB I submarine or U-boat in the German Imperial Navy during World War I.
  UB-10 was ordered in October 1914 and was laid down at the AG Weser shipyard in Bremen in November. UB-10 was a little under 28 metres in length and displaced between 127 and 141 t, depending on whether surfaced or submerged. She carried two torpedoes for her two bow torpedo tubes and was also armed with a deck-mounted machine gun. UB-10 was broken into sections and shipped by rail to Antwerp for reassembly. She was launched in February 1915 and commissioned as SM UB-10 in March. The U-boat was the first of her class to commence operations when she entered service on 27 March 1915.
  UB-10 was the first boat assigned to the Flanders Flotilla, the unit in which she spent her entire career. Her first two commanders were Otto Steinbrinck and Reinhold Saltzwedel, fifth and eleventh, respectively, among the top-scoring German submarine commanders of the war. UB-10 was credited with sinking 37 ships, about two-thirds of them British fishing vessels.
context_section_description: UB-10 began August 1915 by capturing and burning Alert—another British fishing smack—off Lowestoft on the 1st. The same day, Fulgens, a 2,512-ton collier, was torpedoed one nautical mile (1.8 km) from Palling; the crew of the ship—UB-10's largest victim to-date—were all saved.
  On 8 August, UB-10 captured and sank two more smacks—Arbor Vitae and Xmas Rose—off Lowestoft, and followed that up by sinking the largest ship of her career two days later. The 4,243 GRT Rosalie, headed from North Shields for San Francisco, was torpedoed 3 nautical miles (5.6 km; 3.5 mi) from the Blankeney Buoy. A contemporary news account reported that Rosalie had been beached, but was apparently irreparably damaged; all her crew, however, was saved.
  On 11 August, one day after sinking Rosalie, Steinbrinck and the crew of UB-10 bettered their 30 June activities by sinking ten fishing smacks off Cromer. All ten ships, which ranged in size from 41 to 62 tons, were boarded and sunk by explosives. With these ten ships, the August tally for Steinbrinck and UB-10 was 7,309 tons, which accounted for nearly all of the 7,709 tons sunk by Flanders Flotilla boats that month. In addition, counting the ships sunk at the end of July, UB-10 sank 23 ships in a 13-day span, nearly half the 55 ships sunk by the flotilla in both July and August.
caption: The majority of UB-10's victims were fishing smacks, traditionally outfitted with red ochre sails, like this contemporary smack.[22]
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