http://www.kbismarck.com/histoperi.html
20 May 1941 (Tuesday):
0200-0600. Passes through the Great Belt together with Prinz Eugen and the destroyers Z-10, Z-16, and Z-23.
1300. Bismarck and Prinz Eugen are sighted in the Kattegat by the Swedish cruiser Gotland.
http://www.kbismarck.com/photo057.html
The Swedish cruiser Gotland, under the command of Captain Agren, sighted the battleship Bismarck in the Kattegat on 20 May 1941 and immediately reported her position to Stockholm. The sighting report was leaked to the British Naval Attaché, Captain Henry W. Denham who later alerted the Admiralty in London:
“Kattegat, today 20 May. At 1500, two large warships, escorted by three destroyers, five ships and ten or twelve planes, passed Marstrand to the northeast. 2058/20.”
Your tagline is right on today. All the previous non-Homer replies have been about the headline story - the Zamzam. Bismarck and Crete are nowhere to be found in today’s “news”.
The Bismarck during her voyage to Norway seen from a minesweeper of the 5th Flotilla on 20 May 1941.