The Coast Guard Office of Commercial Vessel Compliance (CVC) announces the cancellation of CG-CVC Policy Letter 17-03, issued June 14, 2017, Certificate of Inspection (COI) Phase-in Period for Existing Towing Vessels Using the TSMS Option Under 46, Code of Federal Regulations (CFR) Subchapter M.  
Source: USCG
Link: Cancellation of CG-CVC Policy Letter 17-03: Certificate of Inspection (COI) Phase-in Period for Existing Towing Vessels Using the TSMS Option Under 46, Code of Federal Regulations (CFR) Subchapter M