The final rule to establish safety regulations for commercial towing vessels (known as “Subchapter M”) became effective July 20, 2016, with many of the requirements to be phased in over time. The final rule to establish safety regulations for commercial towing vessels (known as “Subchapter M”) became effective July 20, 2016, with many of the requirements to be phased in over time.
Source: Domestic Vessels
Link: 9/2/2016: Subchapter M – Updated FAQs