New York Codes, Rules and Regulations
Title 21 - Miscellaneous
Chapter III - New York State Thruway Authority
Subchapter D - Canal System
Part 151 - Navigational Rules
Section 151.8 - Formation of tows

Fleet formation of two loaded barges abreast is permitted in the canalized river and lake sections of the canal. Such formation shall not be used in other sections of the canal without the written permission of the Canal Corporation. Where difficulty is experienced in holding light fleets within the buoyed channels, the Canal Corporation or its representative may order such formation and devices for control as in its judgment will best protect the buoys. Failure to comply with such orders will subject the operator of the towing tug to a penalty not to exceed $100.