MI DETROIT ----------------------------------------------------------------------------- Detroit area maritime Frequencies ----------------------------------------------------------------------------- Coast Guard ----------- 157.175--St. Clair 157.050--Port Huron 157.125--Sarnia Ont. 157.150--Detroit group 157.100 (updates/ announcements; working channel from 16) 157.050--Belle Isle 156.800--Calling and distress (monitored by all) 232.100--Cutter 381.800--Helicopter (out of Selfridge ANG, tower: 340.700; can also be heard on other C.G. VHF channels during operations) 161.900- 162.000-- marine operator 161.775--Continuous marine broadcast, Leamington Ont. 161.650--Continuous marine broadcast, Sarnia Ont. Port operations --------------- All ships over 29 meters, transiting the river system(Detroit and St. Clair) must report in on these two channels: 156.600--Sarnia traffic (ch.12) 156.550--Sarnia traffic (ch.11) 156.650--Sarnia traffic (ch.13) Other Commercial ---------------- 156.500--Mail/supply boat J.W. Westcott II; tug companies 156.700--Sterling fuel dock 156.400, 156.300, 156.275--ship to ship 156.375--Dock side ----------------------------------------------------------------------------- -----------------------------------------------------------------------------