Main Page | See live article | Alphabetical index USS Unicorn (SS-429), a Tench-class submarine, was the first submarine of the United States Navy to be given that name for the narwhal, an Arctic marine cetacean with a single tusk suggesting the horn of a unicorn. The contract for her construction was authorized on 9 July 1942, and her keel was scheduled to be laid down by the Cramp Shipbuilding Company of Philadelphia, Pennsylvania, but she was cancelled on 29 July 1944. See USS Unicorn for other ships of the same name. References This article includes information collected from the Dictionary of American Naval Fighting Ships. This article is from Wikipedia. All text is available under the terms of the GNU Free Documentation License.