NMFS amends the regulations implementing the Fishery Management Plan for Groundfish of the Gulf of Alaska and the Fishery Management Plan for the Groundfish Fishery of the Bering Sea and Aleutian Islands Area (FMPs) to establish performance, technical, operational, maintenance, and testing requirement for motion- compensated scales that may be required by NMFS to weigh catch at sea. This rule does not require vessels to weigh catch at sea. Any such requirements would be imposed by other rulemaking. This action is intended to promote the objectives of the FMPs.