Gents,
Back to WWII, I found out that SUs (accidentally coinsiding with SU airplane names - here the tank destroyers) of Soviet Army were suffering most numerous losses in 1944 when they tried to oppose German naval gunnery from the sea - as it turns out, the 8" AP shells from German cruisers shelling the Baltic shore were naturally killing the SUs as well as tanks in dozens. Interesting thing is that, according to Soviet reports, the Kriegsmarine heavy cruiser Prince Eugen had been able to kill the SUs and tanks, half-dug in the sand ashore, with sniper-like precision from the sea. How could it be?