The SCCA Pro Racing World Challenge and Continental Tire Sports Car Challenge racing series, run by the Sports Car Club of America, and the International Motor Sports Association, respectively, utilize modified production-based cars, sports cars, and touring cars, similar in spirit to the original Trans-Am racers.
Submarines, Inc. & Associated Firms. U.S. Submarines, Inc. founded in 1993. The company developed the concept of. the personal luxury submarine and has also designed deep submersibles for. marine science research, diesel electric submarines, tourist submarines with both. steel and transparent acrylic pressure hulls; military patrol and surveillance.
United States. While the United States Navy is runner up on this list of the 10 largest submarine fleets in the world, it is arguably the most capable. While most of the countries on this list have fleets that are largely diesel-electric, the entire fleet of the US Navy is nuclear powered. The US has a large number of Los Angeles class attack submarine.