Towing Endorsement Guide: Adding a Towing License to Your MMC
The towing endorsement authorizes you to serve as Mate or Master of Towing Vessels — the specialized license behind inland, coastal, and ocean towing careers. This guide covers pathways, sea time, and routes.
What Is a Towing Endorsement?
The towing endorsement authorizes the holder to serve as a licensed Mate (Pilot) or Master aboard a towing vessel. Towing requires specialized skills in barge handling, current management, and bridge clearance that differ from conventional vessel operation, which is why it's credentialed separately.
The Role of the TOAR
Central to earning the endorsement is completing a Towing Officer Assessment Record (TOAR) — a set of practical, hands-on competencies signed off by a qualified Designated Examiner aboard a towing vessel. The TOAR verifies real vessel-handling ability rather than relying on written examination alone.
Sea-Time Requirements
The Mate and Master of Towing Vessels grades require documented sea service, including qualifying time aboard towing vessels and on the specific routes you intend to work. Exact requirements depend on your existing license, the route, and the pathway you follow. Document towing time meticulously on your sea service forms.
Route Limitations
Unlike some officer licenses, the towing endorsement specifies the waters where you're authorized to operate — for example Western Rivers, Great Lakes, or Near Coastal. Each route requires specific service on that route and may require separate assessments, so building out route authority over a career is common.
Training and Company Programs
USCG-accepted towing training exists at several schools, and many large towing companies run in-house trainee programs that combine on-the-job training with the required TOAR assessments through their own Designated Examiners. Completing your TOAR while working normal hitches is a common and efficient route.
A note on requirements
Credentialing rules change and often depend on your specific vessel, route, tonnage, and history. Nothing here is legal advice. Always confirm the current requirements with the USCG National Maritime Center (NMC) and with your employer or vessel operator before making career or hiring decisions. When a rule seems to conflict with your situation, an NMC deficiency letter or a call to the NMC Customer Service Center is the fastest way to get an authoritative answer.