This chapter details the development of a novel, multi-mode operation marine robotics vehicle designed using mechatronic principles for operational flexibility in high-resolution near-seabed surveys from shallow inshore waters out to the continental shelf edge. The vehicle can be operated in surface-tow mode or as a thrusted pontoon. With the buoyancy module released, the vehicle becomes neutrally buoyant and is operated as a survey class remotely operated vehicle (ROV) depth rated to 1,000 m. © 2010 Springer-Verlag London.