In the 1921 case of British Columbia Mills Tug & Barge Company v. Myrolie, the U.S Supreme Court ruled in favor of Myrolie. The dispute arose when a barge owned by British Columbia Mills Tug & Barge Company collided with a fishing net owned by Myrolie, causing damage to his property. The company argued that they were not liable for damages because their vessel was on an established route and had followed all necessary precautions while navigating through waters known to be used for fishing purposes. However, the court held that despite taking precautions and being on an established route, if any damage is caused due to collision between a moving vessel and stationary object or equipment (in this case - fishing nets), then it's presumed that such damage resulted from negligence unless proven otherwise by the moving vessel’s operator. Therefore, since there was no evidence presented proving absence of negligence on part of tugboat operators during navigation which could have avoided collision with stationary objects like nets; hence liability fell upon them.

The dissenting opinion in the case of British Columbia Mills Tug & Barge Company v. Myrolie argued that the majority's decision to uphold a lower court ruling, which held the tugboat company liable for damages caused by its negligence, was incorrect. The dissent contended that there was insufficient evidence to prove negligence on part of the tugboat company and thus it should not be held responsible for any damage incurred. They also disagreed with how liability had been determined, arguing that it did not align with established principles of maritime law or precedent cases where similar circumstances were present but resulted in different outcomes. Furthermore, they expressed concern over potential implications this ruling could have on future cases involving maritime accidents and liabilities.