Well, this is actually a year-old creation but I figured I'd make my debut on here with something that needs some work, in case anyone would like to help with it. It's a fictional Luxury Submarine I built 'cause I wanted to test my building capabilities. The Sub is made for mostly surface-operations, submerging only when needed, and it can stay underwater for 9 hours.
Guardian Industries Presents:
Sea Dolphin II Luxury Submarine
The Dolphin II is an 8 million dollar super submarine, filled with all the luxuries you'd expect in a palace. Pool, hot tub, 2 private bedrooms plus 3 guest rooms, fully modernized touch screen bridge, amidships helipad, movie theater, relaxation spaces at both the bow and aft sections, with retractable overhang, a top speed of 6 knots, twin turbo water-jet turbine engines, large engine room, 20,000 gallon fuel capacity, plus room for additions, maximum depth of 1,800 feet below sea level, an underwater submersible/boat garage, and lots of windows underwater to see the aquatic life.