Section 5 AAC 35.060 - Size limit for Tanner crab(a) Unless otherwise provided in this chapter, male Tanner crab of the species Chionoecetes bairdifive and one-half inches or greater in width of shell may be taken or possessed.(b) Width measurement of Tanner crab shall be the greatest straight-line distance across the carapace at a right angle to a line midway between the eyes to the midpoint of the posterior portion of the carapace and shall include the spines.In effect before 1981; am 6/28/81, Register 78; am 7/1/2006, Register 178