Norwegian spotters aided in the destruction of numerous German warships, such as the battleships and . The Norwegian resistance also smuggled people in and out of Norway during the war, through Sweden or by fishing boats to Shetland, nicknamed the "Shetland bus". A number of saboteurs, most notably Max Manus and Gunnar Sønsteby, destroyed ships and supplies. Perhaps its most famous achievements were a series of operations to destroy Norsk Hydro's heavy water plant and stockpile of heavy water at Vemork, crippling the German nuclear programme. The Germans attempted to stifle Resistance activities and executed several innocent Norwegian men, women, and children in retaliation after any Resistance act. Probably the worst act of reprisal was the assault on the fishing village of Telavåg in the spring of 1942.