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BATTLE // April 23, 1918

Zeebrugge Raid

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Overview

The Zeebrugge Raid on 23 April 1918, was an attempt by the Royal Navy to block the Belgian port of Bruges-Zeebrugge. The British intended to sink obsolete ships in the canal entrance, to prevent German vessels from leaving port. The port was used by the Imperial German Navy as a base for the Flanders U-boat flotillas and light shipping, which were a threat to Allied control of the English Channel and southern North Sea. Several attempts to close the Flanders ports by bombardment failed and Operation Hush, a 1917 plan to advance up the coast, proved abortive. As ship losses to U-boats increased, finding a way to close the ports became urgent and the Admiralty became more willing to consider a raid.

Overview adapted from Wikipedia, licensed under CC BY-SA 4.0.

Significance

The Zeebrugge Raid of April 23, 1918 was a Royal Navy attempt to neutralize Bruges-Zeebrugge as a German naval base by sinking obsolete vessels in the canal entrance and blocking German access to the port. The port served as the primary base for Imperial German Navy Flanders U-boat flotillas and light shipping, forces that posed a direct threat to Allied control of the English Channel and southern North Sea. Prior efforts to neutralize the Flanders ports through naval bombardment had failed, and Operation Hush, a 1917 plan to advance up the Belgian coast, had proven abortive. Rising Allied ship losses to U-boats gave the operation its urgency and prompted the Admiralty to accept the risks of a direct raid. The British committed approximately 1,700 personnel and suffered between 200 and 300 casualties in the action.

Forces & casualties

Troop strength

  • United Kingdom1,700
    medium

Casualties

  • Royaume-Uni de Grande-Bretagne et d'Irlande200–300
    medium

Commanders (4)

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6 sibling battles · 4 factions

Last verified June 2026
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