This is Dumas' Radio Controlled Sport Scale Akula Sub. Designed from the Russian nuclear attack sub. This model represents a current AKULA class nuclear attack submarine as in service with the current Russian Fleet. The model includes details such as conning tower, periscope/snorkel/radar masts, cruciform tail fin including the pod on the upper tailfin that houses the towed sonar array which is a distinctive feature of current Russian attack subs. Easy to assemble w/all neccessary running hardware for its single screw drive line. Designed for pool use. Enhanced building manual will walk you step by step through the successfull completion of your model. All the molded plastic parts to build the sub, all running hardware, building manual. One Dumas 2004 6V motor One 7.2V battery pack One ESC One Three channel radio with 3 standard servos Assorted building equipment and paint if desired Length: 33" Width: 4" (the width of a ship is also called the "beam") This is a DYNAMIC model,meaning it surfaces or dives via the action of the bow and stern planes, not by flooding and emptying of ballast tanks like a real submarine. It is intended for use in a pool or other enclosed body of water to a depth of 3 feet (.97 meters) 9/25/2 lj &