On June 2, 2016, about 0111 local time, the dump scow barge 123 being pushed by the Panama-flagged towing vessel Matachin collided with the US Coast Guard cutter Thetis in Las Cascadas Reach, Panama Canal. Although the Matachin and its tow were not damaged, the Thetis sustained an estimated $1.2 million in damage to the hull and deck plate aft, as well as to various systems in the steering gear room. There were no injuries, nor was there any report of pollution.

​​The probable cause of the collision between the Matachin tow and the US Coast Guard cutter Thetis was the failure of the master of the Matachin to maintain a proper lookout and use radar to detect the vessel traffic ahead to avoid a collision. Contributing to the collision was the failure of the pilot and the navigational crew on board the Thetis​ to maintain a proper lookout.