The Assistant Administrator (AA) for Fisheries, National Oceanic and Atmospheric Administration (NOAA), on behalf of the International Pacific Halibut Commission (IPHC), publishes annual management measures promulgated as regulations by the IPHC and approved by the Secretary of State governing the Pacific halibut fishery. The AA also announces approval of the Area 2A (waters off the U.S. West Coast) Catch Sharing Plan (CSP), with modifications recommended by the Pacific Fishery Management Council (PFMC), along with implementing regulations for 2013, and provides notice of the guideline harvest levels (GHLs) for Areas 2C and 3A. These actions are intended to enhance the conservation of Pacific halibut and further the goals and objectives of the Pacific Fishery Management Council (PFMC) and the North Pacific Fishery Management Council (NPFMC) (Councils).