36 C.F.R. § 13.1176 – Speed restrictions.

(a) From May 15 through September 30, in designated whale waters the following are prohibited:
1. (1) Operating a motor vessel at more than 20 knots speed through the water; or
2. (2) Operating a motor vessel at more than 13 knots speed through the water, when the superintendent has designated a maximum speed of 13 knots, or at a maximum speed designated by the superintendent based on NOAA guidelines or new scientific information.
(b) From July 1 through August 31, operating a motor vessel on Johns Hopkins Inlet waters south of 58°54.2′ N latitude (a line running due west from Jaw Point) at more than 10 knots speed through the water is prohibited.