Convoy attack surface or submerged?

[Aktungbby]

Originally Posted by allievo

July, 1940. Grid BE67. Enemy convoy reported. Visual contact estimated around 1800, a couple of hours before sunset. Sea flat, wind 1 m/s, visibility clear. Dive and attack submerged or waiting for darkness and hit'em on the surface? Which way would YOU prefer???

With the sea flat and no wind, go in submerged, scope at the water line as you are highly visible. Preheat your eels and take the Libertys in the stern so they sink stern first which generally stops them for leisurely deck gun disposal when the convoy passes. After dark, if no moon, surface, transfer spare eels and pursue, taking any stragglers and close the convoy astern, decks awash. Destroyers cannot use passsive sonar from the rear. Remember to beacon BDU so other boats can converge. One ship one eel. Get inside the convoy, its safer there as the engine noises confuses the escorts. Viel gluck kaleun