TVIB News Maritime Commons

USCG: SUB M – Pilot House Alerter and Towing Machinery Requirements

Originally posted on Coast Guard Maritime Commons on 09/22/2022

The Office of Commercial Vessel Compliance (CG-CVC) would like to remind all Subchapter M – Towing Vessel owners and operators that while the phase-in allowance to get your Certificate of Inspection (COI) has past, as of July 19, 2022, there are some other requirements for existing vessels that are a prerequisite prior to obtaining the next Renewal COI.  In accordance with 46 Code of Federal Regulations (CFR) §143.200(c) no later than 5 years after the issuance of the first COI for the vessel, all existing towing vessels inspected under Subchapter M must meet the Pilothouse Alerter (46 CFR §143.450) and Towing Machinery requirements (46 CFR §143.460).

Failure to meet these requirements could result in issuance of a CG-835V vessel deficiency and possibly non-renewal of the 5 year COI per 46 CFR §136.215.

If you have any questions regarding the requirement noted above, or an inspection for your towing vessel, please seek your local Officer in Charge, Marine Inspection.  For any questions regarding this blog post, please contact




USCG: “Final deadline for Subchapter M phase-in arriving in July 2022”

01/31/2022 – reposted from USCG Maritime Commons

Final deadline for Subchapter M phase-in arriving in July 2022


Submitted by the Office of Commercial Vessel Compliance (CG-CVC)

As we begin the New Year, towing vessel owners and operators are reminded that the deadline for 100% Subchapter M phase-in is fast approaching.  No later than July 19, 2022, all towing vessels meeting the applicability criteria found in 46 CFR § 136.105 must have on board a valid Certificate of Inspection (COI) issued by the Coast Guard.

Per 46 CFR 136.202, towing vessel owners and operators are responsible for ensuring that all their towing vessels receive a Certificate of Inspection (COI) before July 19, 2022.  Failure to meet vessel certification requirements may result in CG-835V deficiencies, vessel delays, civil penalties, or additional enforcement actions.

Initial certification should be scheduled with the local Officer in Charge, Marine Inspection (OCMI) at least three months in advance of the desired inspection date.  Therefore, towing vessel owners and operators should schedule vessel initial inspections as soon as possible, but no later than April 20, 2022.  Please note that Coast Guard attendance is required for initial certification for both the Coast Guard Option and Towing Safety Management System (TSMS) Option, as described in 46 CFR § 136.130. Application for inspection should be made using the CG-Form 3752, “Application for Inspection of a U.S. Vessel.”  OCMI contact information can be found on the Marine Inspectors Contact List on the CVC-1 webpage.  For further information, please see the Coast Guard’s Towing Vessel National Center of Expertise (TVNCOE) website.

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