Docking pilot’s actions, bulker’s speed cited in Virginia wharf strike
The tug G.M. McAllister hit the structure while assisting Ijssel Confidence
(WASHINGTON) — The National Transportation Safety Board (NTSB) has issued Marine Accident Brief 20/37 for its investigation of the Sept. 23, 2019 accident involving the tugboat G.M. McAllister and the NGL Energy Partners wharf on the Southern Branch of the Elizabeth River, near Chesapeake, Va. No injuries or pollution were reported in connection with the accident, which involved the tug assisting a bulk carrier. Damage to the wharf was estimated at $1.47 million.
The undocking and transit to sea of the bulk carrier Ijssel Confidence was conducted with two 4,000-horsepower tugboats, G.M. McAllister and Nancy McAllister. After the ship left the berth, it proceeded downriver astern in a general westerly direction toward the turning basin, with the engine dead slow astern and the rudder midship. As Ijssel Confidence approached the turning basin where the river started to bend northwest, the vessel’s astern speed continued to increase and its course over ground remained in a westerly direction. As the docking pilot attempted to slow the ship, the vessel moved toward to the south side of the river, away from Money Point, and G.M. McAllister struck the NGL Energy Partners berth. During the NTSB’s investigation, both tugboat captains stated that Ijssel Confidence was moving too fast for the tugboats to work effectively.
The docking pilot was an experienced former tugboat captain and mate. He had docked and undocked hundreds of ships in the accident area of the river, mostly using tractor tugboats. Conventional tugboats, like those involved in this accident, are less maneuverable than tractor tugboats. In this accident, the docking pilot neglected to take into account the conventional tugboats’ reduced effectiveness and the additive effect to the ship’s speed.
The NTSB determined the probable cause of the contact of G.M McAllister with the NGL Energy Partners berth was the docking pilot backing down the river toward the turning basin at a speed at which the assist tugboats could not be effectively used.
– National Transportation Safety Board