33 CFR 100.1303 - Annual Kennewick, Washington, Columbia Unlimited Hydroplane Races.
(a) This regulation is effective each year on the last Tuesday through Sunday in July from 8:30 a.m. local time until the last race is completed each day at approximately 7:30 p.m. local time, unless sooner terminated by the Patrol Commander.
(b) The Coast Guard will restrict general navigation and anchorage by this regulation during the hours it is in effect on all waters of the Columbia River bounded by two lines drawn from shore to shore; the first line running between position latitude 46°14′07″ N, longitude 119°10′42″ W and position latitude 46°13′42″ N, longitude 119°10′51″ W; and the second line running between position latitude 46°13′35″ N, longitude 119°07′34″ W and position latitude 46°13′10″ N, longitude 119°07′47″ W. [Datum: NAD 83]
(c) When deemed appropriate, the Coast Guard may establish a patrol consisting of active and auxiliary Coast Guard personnel and vessels in the area described in paragraph (b) of this section. The patrol shall be under the direction of a Coast Guard officer or petty officer designated as Coast Guard Patrol Commander. The Patrol Commander is empowered to forbid and control the movement of vessels in the area described in paragraph (b) of this section.
(d) The Patrol Commander may authorize vessels to be underway in the area described in paragraph (b) of this section during the hours this regulations is in effect. All vessels permitted to be underway in the controlled area (other than racing or official vessels) shall do so only at speeds which will create minimum wake consistent with maintaining steerageway, and not to exceed seven (7) miles per hour. This speed limit may be adjusted at the discretion of the Patrol Commander to enhance the level of safety.
(e) A succession of sharp, short signals by whistle, siren, or horn from vessels patrolling the area under the direction of the U.S. Coast Guard Patrol Commander shall serve as a signal to stop. Vessels signalled shall stop and shall comply with the orders of the patrol vessel personnel; failure to do so may result in expulsion from the area, citation for failure to comply, or both.