156.3 Marine Ch. 6 - Ship to Ship
156.4 Marine Ch. 8 - Ship to Ship
156.5 Marine Ch. 10 - Ojibway Supply Boat
156.6 Marine Ch. 12 - USCG Soo Traffic Control
156.7 Marine Ch. 14 - Soo Locks Lockmaster
156.8 Marine Ch. 16 - Emergency and Calling
157.05 Marine Ch. 21 - USCG Ship to Ship
157.1 Marine Ch. 22 - USCG to Civilians & Notices