以下の英文を訳して下さい。
Less than a week later, on 26 October, U-24 became the first submarine to attack an unarmed merchant ship without warning, when she torpedoed the steamship Admiral Ganteaume, with 2,500 Belgian refugees aboard. Although the ship did not sink, and was towed into Boulogne, 40 lives were lost, mainly due to panic. The U-boat's commander, Rudolf Schneider, claimed he had mistaken her for a troop transport.
On 30 January 1915, U-20, commanded by Kapitänleutnant Otto Dröscher, torpedoed and sank the steamers SS Ikaria, SS Tokomaru, and SS Oriole without warning, and on 1 February fired a torpedo at, but missed, the hospital ship Asturias, despite her being clearly identifiable as a hospital ship by her white paintwork with green bands and red crosses.
