What was the name other British ship sunk by a German submarine on may 7 1915?

The British ship sunk by a German submarine on May 7, 1915, was the RMS Lusitania. This tragic event resulted in the loss of nearly 1,200 lives and significantly influenced public opinion against Germany during World War I. The sinking of the Lusitania highlighted the dangers of unrestricted submarine warfare and contributed to the United States' eventual entry into the war.