 Day successfully flew the Baby launch craft over Harwich in its one and only trial flight, and, although on this occasion the parasite was successfully released, the scheme was abandoned as impractical for North Sea conditions.Several hundred seaplanes of Porte's design were built for war-time patrolling of the east coast of England, for naval reconnaissance around the Mediterranean Sea, and were even sold to the US for coast patrols.Armed with torpedoes and depth charges they could attack ships and U-boats.