"53.0352"^^ . . "lost at sea 1871" . "9.7536"^^ . . "Challenger was a wooden clipper ship built in 1852 by Richard & Henry Green, Blackwall Yard for Hugh Hamilton Lindsay, London.From \"The Copartnership Herald\", Vol. I, no. 8 (October 1931)...American ships, which still held the supremacy until soon after Richard Green had declared his decision not to be beaten by them. He had a new tea clipper built at his yard at Blackwall, called the Challenger, of 699 tons, and she was sent off to China in 1852."@en .