Sinking of the RMS Lusitania significant "false flag" controversy left the ship; Cunard later explained that he was "tired and really ill." He was replaced with a new commander, Captain William Thomas Turner, who had previously commanded "Lusitania", "Mauretania", and "Aquitania" in the years before the war. On 17 April 1915, "Lusitania" left Liverpool on her 201st transatlantic voyage, arriving in New York on 24 April. A group of German–Americans, hoping to avoid controversy if "Lusitania" were attacked by a U-boat, discussed their concerns with a representative of the German Embassy. The embassy decided to warn passengers before her next crossing not to sail aboard
German submarine U-652 The 3,410 ton merchant ship "Baron Pentland" remained afloat due her cargo of timber despite a broken back, but was later torpedoed and sunk by on 19 September. On 4 September 1941, off Iceland, the American destroyer received a signal from a British bomber that a German submarine was in the vicinity. "Greer" made sonar contact, and pursued the "U-652" at close range. The aircraft dropped four depth charges, and soon after the U-boat fired a torpedo at the US warship, perhaps believing she had launched the attack. "Oblt.z.S." Fraatz also misidentified the destroyer as ""one of the 50 American