The objective of this phase of the program was to develop a detailed design for a prototype autonomous marine booster pump (AMBP). Principal tasks included a mechanical design of the complete system including the mechanical, hydraulic, and electrical components and a hull structure to provide flotation. The system was analyzed to determine the mooring loads and a mooring system was designed. The major remote control and telemetry system components were procured and bench tests were run to program and test simulated operations. These were also tested with radio modem communication between the shore and on-board systems to simulate the actual field situation and to determine the attainable range. It was concluded that the AMBP is still feasible and should be carried into the prototype testing phase, where several important parameters will be established for the final system design.