COLREGS DEMARCATION LINE
The Inland Navigational Rules Act of 1980 is in effect for vessels transiting this area. The seaward boundary of this area is the COLREGS demarcation line. In the area seaward of the COLREGS demarcation line, vessels are governed by COLREGS: International Regulations for Prevention of Collisions at Sea, 1972. The COLREGS demarcation line is defined in 33 CFR 80.1140.