sentences:  The next two ships did not carry any salvageable cargo, and "Sickle" sank one with demolition charges and the other by ramming.On 11 May, "Sickle" surfaced and bombarded an enemy radar station with her three-inch deck gun; 17 rounds hit their target but the enemy returned fire four minutes later, wounding three men, including "Sickle"s captain and forcing her to submerge.Shortly after midnight on 13 May, the boat surfaced and sank the German sailing vessel "Fratelli Corrao" with gunfire.