The Draper Laboratory's VCUUV (Vorticity Control Unmanned Undersea Vehicle). The craft, which cost nearly a million dollars to build, is modeled after a tuna and can swim freely without tethers at a maximum speed of 2.4 knots and can make rapid turns. The Draper Lab VCUUV follows on studies at MIT by Professor Michael Triantafyllou. Cambridge, MA, USA.