Aviation encounter — Grimsby Docks — 1958-06-29

A private plane pilot and passenger reported an aerial observation at or near Grimsby Docks on 29 June 1958. The observation involved a single black dumbbell-shaped object flying at 700 mph against the wind. Source: Dominique F. Weinstein, Unidentified Aerial Phenomena: Eighty Years of Pilot Sightings (NARCAP TR-04, February2001), PDF page35, table row22.