The Battle at Sea · Interactive Chart

The U-Boat War, Charted

Every marker is a U-boat’s recorded final position — 742 of the 1,153 boats in the record. Drag the scrubber to replay the war month by month, track a single boat, light up a wolfpack, or follow the story chapter by chapter.

Story of the Battle

U-boat type

Losses between

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Track a boat

Wolfpack

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May 1945

The Exchange Rate · boats commissioned vs boats lost at sea, monthly

Vessel records, service histories and fates compiled from uboat.net · Final positions parsed from recorded fates

The Battle at Sea · Battle of the Atlantic Story