Qualla: SM UC-45

SM UC-45: Introduction

Sun, 17 May 2026 00:00:00 GMT

The mines killed more ships than her torpedoes did. SM UC-45 was a small, ugly, dangerous boat - a German Type UC II coastal minelayer, displacing about 400 tons surfaced, with eighteen mines stowed in six vertical chutes forward and a stern torpedo battery as an afterthought. She was built for a single grim purpose: slip out of Bruges or Zeebrugge, run submerged into a British-traveled patch of sea, drop her mines, and run home. UC-45's tally in five short patrols in the spring and summer of 1917 came to twelve ships sunk. Then a diving accident put her on the seabed on 17 September 1917, with most of her crew aboard. The Germans raised her. She came back into service in October 1918, just in time for the Armistice five weeks later. She was surrendered, towed to Lancashire, and broken up.

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SM UC-45: Mines Over Torpedoes

Sun, 17 May 2026 00:00:00 GMT

By the middle of 1916 the German Imperial Navy had learned what the British already knew: a moored sea mine is a wonderfully cheap way to kill an expensive ship. UC-45 belonged to the Type UC II class, of which 64 were built, designed almost entirely around the mine-laying missio...

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SM UC-45: Five Patrols

Sun, 17 May 2026 00:00:00 GMT

Ordered on 20 November 1915 and launched on 20 October 1916, UC-45 was commissioned into the Imperial Navy on 18 November 1916 under her serial designation. Her wartime record reads as a list of dates and tonnages, but each entry is a small disaster for somebody. On 19 March 1917...

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SM UC-45: A Mistake in the Bight

Sun, 17 May 2026 00:00:00 GMT

On 17 September 1917 something went wrong during a routine dive. The exact mechanism is not preserved in the record - a flooded compartment, a stuck vent, an error in the trim tank balance - but the result is. UC-45 went to the bottom of the North Sea and stayed there. Most of he...

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SM UC-45: Raised, Returned, Surrendered

Sun, 17 May 2026 00:00:00 GMT

What is unusual about UC-45 is what happened next. A German salvage vessel located the wreck and raised her - no small feat in the North Sea in 1917, with British patrols overhead and weather no friend to lifting operations. The hull was towed home, repaired, refitted, and recomm...

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