The purpose of this project was to assess the extent to which the data available from NMFS records could be used to construct and implement a transferable input-control management system for the New England groundfishery. To construct an input-control system, management must (1) define an input index; (2) allocate the allowed level of the input index to participants, usually based upon historic participation; (3) define terms of input index transferability, if an; and (4) enforce the system. Realistically, most input control systems include a step (5): modify system to compensate for harvester response to regulation. For the New England groundfishery, the available historic data on fishery participation is contained in the mandatory logbooks and dealer reports. It is well-known that the economic content of these data sets is relatively sparse. Landings by species by trip and value of landings by species by trip are available. There is no cost information in this data. There is data on vessel characteristics, including days-absent, days-fished, and areas fished. A general conclusion is that the estimation of a primal production function should be helpful to a primal production function should be helpful to the process of constructing a regulatory input index for the New England groundfish fishery. It is less clear if a truly adequate index can be defined. The opportunities for the industry to adjust to any input index will create significant regulatory problems. The problems are sufficient to draw into question the ultimate success of a transferable input-index system.