Amendment 13 was developed to end overfishing and rebuild NE multispecies (groundfish) stocks managed under the authority of the Magnuson-Stevens Fishery Conservation and Management Act (Magnuson-Stevens Act), and to make other changes in the management of the groundfish fishery. This rule implements the following measures: Changes in the days-at-sea (DAS) baseline for determining historical participation in the groundfish fishery; DAS reductions from the baseline; creation of new categories of DAS and criteria for their allocation and use in the fishery; changes in minimum fish size and possession limits for recreationally caught fish; a new limited access permit category for Handgear vessels; elimination of the northern shrimp fishery exemption line; access to groundfish closed areas for tuna purse seiners; an exemption program for southern New England (SNE) scallop dredge vessels; modifications to Vessel Monitoring System (VMS) requirements; changes to procedures for exempted fisheries; changes to the process for making periodic adjustments to management measures in the groundfish fishery; revisions to trip limits for cod and yellowtail flounder; changes in gear restrictions, including minimum mesh sizes and gillnet limits; a DAS Transfer Program; a DAS Leasing Program; implementing measures for the U.S./ Canada Resource Sharing Understanding for cod, haddock, and yellowtail flounder on Georges Bank (GB); a Special Access Program (SAP) to allow increased targeting of GB yellowtail flounder; revisions to overfishing definitions and control rules; measures to protect Essential Fish Habitat (EFH); new reporting requirements; sector allocation procedures; and a GB Cod Hook Gear Sector Allocation. The effort-reduction measures in Amendment 13 are intended to end overfishing on all stocks and constitute rebuilding programs for those groundfish stocks that require rebuilding. Other measures are intended to provide flexibility and business options for permit holders. Also, NMFS informs the public of the approval by the Office of Management and Budget (OMB) of the collection-of- information requirements contained in this final rule and publishes the OMB control numbers for these collections.