I just found this forum. I recently made the very unusual purchase of a Mark 8 Torpedo. It's in excellent condition and now sitting quietly in my garage. From what I understand, she is complete with gyro, radial engine, etc. I'd love to know more about these Torpedos, how they were powered, armed, controlled, etc. there isn't a lot of information about these Torpedos available and I'd love to make contact with someone who knows about them. I live in Sydney Australia. Steve.