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In page SMS Gefion:

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Gefion, classified as a cruiser-corvette, was authorized in the 1890–91 budget and named for the earlier sail frigate Gefion.[4] The contract for her construction was awarded to Schichau-Werke in late 1891.[2] She was the last unprotected cruiser built by the Kaiserliche Marine (Imperial Navy); thereafter, the Germans built the Gazelle class of light cruisers to fill the need for small, overseas cruisers.[5]