NMFS issues final specifications for the 2001 spiny dogfish fishery (May 1, 2001, through April 30, 2002). This final rule establishes a commercial quota and possession limits for the 2001 fishing year to address overfishing of the spiny dogfish resource. In addition, the current trip limits are modified to be possession limits, specified as the maximum amount allowed to be landed within any one 24- hour period (per-calendar-day possession limit). The intent of this action is to comply with implementing regulations for the Fishery Management Plan for the Spiny Dogfish Fishery (FMP), which require NMFS to impose measures for each upcoming fishing year that will prevent overfishing of this fishery.