As i said in my first post i am mainly concerned with technical diving and not familiar with research sources re WW1 - my question is would it be asking too much for anyone who may have or know the exact location where the u-32 sank the Karnak to share this information? Would the KTB or the U-32 be in any particular naval documentation centre? Would it include some idea as to where it torpedoed the Karnak? any additional help will be most welcome.