NMFS is notifying registered vessels of their assignments for the 2003 B season Atka mackerel fishery in harvest limit areas (HLA) 542 and/or 543 of the Aleutian Islands subarea of the Bering Sea and Aleutian Islands management area (BSAI). This action is necessary to allow the harvest of the B season HLA limits established for area 542 and area 543.