By boat: Red Dog Grill is located at mm 242.1 on the Illinois river. The Marina entrance is marked with signage, and is recognizable by the large concrete blocks that ring the harbor. • Visitors arriving from upstream should proceed approximately 2 miles downriver from the Marseilles lock. The Harbor entrance is on the right bank. • Visitors arriving from downstream should proceed approximately 3/4 mile upriver from the tip of Bull’s Island. The Harbor entrance is on the left bank. • All visitors should contact the Marina office at (815) 433-5000, extension 2 or by hailing on VHF channel 16, in order to obtain docking instructions and assistance. After hours, contact the Harbormaster at (815) 326-5853. Reservations are encouraged, as dockage is limited.