Article - Speed of Liners. Article about the ""Speed of the Great Liners: A factor which makes head lights and other precautions Necessary"". Illustrations show the positions of a vessel steaming at full speed (22 knots) in 30 seconds and one minute, demonstrating how quickly a collision with an iceberg could happen. The two scale illustrations give an idea of the speed of the Titanic, which was considered a slow boat against the flyers of the Cunard Line and the big battle cruisers with their s