117.966—Galveston Channel.
The drawspan for the Pelican Island Causeway Drawbridge across Galveston Channel, mile 4.5 of the Galveston Channel, (GIWW mile 356.1) at Galveston, Texas, must open on signal; except that, from 6:40 a.m. to 8:10 a.m., 12 noon to 1 p.m., and 4:15 p.m. to 5:15 p.m. Monday through Friday except Federal holidays, the drawspan need not be opened for passage of vessels. Public vessels of the United States must be passed at anytime.