09/04/2026
In 1940, a Finnish lighthouse keeper's wife cranked a foghorn by hand 48 hours — no power, storm, 12 ships warned, arms broken.
February 13-15, 1940, Utö Island, Gulf of Finland, storm 5 days, power cut, Soviet bombers, lighthouse dark, 12 ships convoy lost, keeper wounded, wife 38.
Wife, Aino Sumu, 38, cranked foghorn by hand 48 hours Feb 13-15 1940, no power, storm 100km/h, lighthouse lamp out, keeper leg broken, 12 ships convoy food ammo, fog 0 vis, horn hand-crank 20kg, cranked every 30 sec.
Lighthouse, Utö, only light Gulf.
Power cut cable bombed.
Keeper, Eero, leg broken beam.
Wife cranked horn, 48 hours, 5,760 cranks, arms torn.
Foghorn, 1905 brass, hand crank, sound 5km.
12 ships, convoy, heard horn, turned, avoided rocks.
Storm log Feb 15 1940: "Wife horn 48h."
Aino: "Arms gone, ships live."
Arms broken tendon.
Convoy saved, food for 5,000.
Foghorn crank, in Utö Museum — with wife's glove torn.
Year & Place: Feb 13-15, 1940, Utö Island, Gulf of Finland.