Thomas Welcome Roys (c. 1816 - d. 1877) was an American whaleman. He was significant in the history of whaling in that he discovered the Western Arctic bowhead whale population and developed and patented whaling rockets in order to hunt the faster, more powerful species that had until then eluded European whalers. Open-boat whaling On 23 July 1848, in the Sag Harbor bark Superior, he sailed from the north Pacific through the Bering Strait and into the Arctic Ocean, where he discovered an abundance of "new fangled monsters" (bowhead whales). The following season fifty whalers (forty-six Yankee, two German, and two French vessels) sailed to the Bering Strait region on Roys's success alone. Roys, in the Cold Spring Harbor vessel Sheffield, spent the summers of 1851-1853 cruising in the Sea of Okhotsk, obtaining in all over 4,500 barrels of oil. Rorqual whaling Iceland and other Atlantic hunting grounds In 1855, while cruising south of Iceland in the 441-ton Hannibal, he was able to kill a "sulphurbottom" (blue whale) with a Brown's bomb gun. He realized that if he had a better way to dispatch such large rorquals, he could easily fill his ship's hold with whale oil. Due to his ship having taken a beating in a heavy gale in these waters, he was forced to put into Lorient, France. While there, he ordered for "two rifles in pairs for killing [rorqual] whales," staying long enough to see them nearly completed, then leaving for home in a steamship, and, when finished, having the guns sent by way of England to the US. The following spring, he went out in the 175-ton brig William F. Safford to test his experimental whaling guns. The guns Roys had ordered from France were lost on the voyage out, so he had to persuade C. C. Brand of Norwich, Connecticut., to let him use his bomb lance, but to increase his bomb missiles to three pounds in order to ensure greater success. Roys sailed to Bjørnøya, where he encountered vast numbers of blue, fin, and humpbacks. He fired at around sixty, with only a single blue whale being saved. He then sailed to Novaya Zemlya, capturing two humpbacks there. After cruising off Russia and Norway, he came to anchor at Queenstown, Ireland, and thence went to England to reconstruct his lost French-made guns. He had Sir Joseph Whitworth manufacture him some rifled whaling guns and