Ardeo Design has designed a custom luxury interior for a 40’ submarine, which is used as a tender on a megayacht. Capable of reaching a depth of 1200 feet, it cruises at 5 to 6 knots under water. The luxuriously appointed passenger compartment seats 10 in adjustable waterproof leather chairs, each with audio video, reading light, and fresh air controls at the passengers' fingertips.  There is a 5’ diameter viewing port forward, and eight 24” diameter viewing ports- one located at every seat.  A Galley and Lav are located aft. Exterior design and naval architecture by Robert Perry Naval Architects.