CMA CGM PUCCINI

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Interim Report: Steering failure caused allision with beacon

The 'CMA CGM Puccini' went off its intended track towards the edge of the navigable channel in the Yarra River and struck a navigation beacon due to a steering failure, an ATSB interim investigation report detailed. The ship had sailed from Swanson Dock in the Port of Melbourne in the morning of May, 29, 2023 under the conduct of a pilot and initially with two tugs in attendance. Shortly after 04.18 a.m., during the turn to leave Swanson Dock, the ship's master and chief mate noticed the rudder response appeared sluggish. About 25 minutes later, when it had passed under the Westgate Bridge and both tugs had been dismissed, the ship was moving at about 6,6 knots when the helmsman reported that the rudder was not responding to the steering wheel. With its speed increasing, the ship moved further off course and tracked toward the western edge of the dredged navigable Yarra River channel. Despite efforts by the pilot and crew to slow the ship and correct its swing, the ship struck a navigation beacon, and its stern passed over the edge of the navigable channel. The two tugs were nearby and returned, and helped control the ship's erratic movement. The ship was then moved to Webb Dock for inspection. On May 26 the ship was cleared to leave port, and it departed on May 27 for Port Botany, Sydney. The following day, in preparation for arrival to Port Botany, the ship's crew again tested the steering gea. During this testing, the steering again began to behave erratically." At this time, the 2nd engineer, who had joined the ship in Melbourne, noticed the steering system's hydraulics were incorrectly configured. After the by-pass valve of the (non-running) pump was closed, there were no further erratic rudder responses. The ship subsequently sailed for Brisbane on May 30, where it berthed without incident on June 1. The ATSB commenced an investigation on the basis of initial reports that, despite multiple inspections, the erratic behaviour of the ship's steering on May 25 remained unexplained over the following days and the ship departed Melbourne with no problem identified. ATSB investigators subsequently attended the ship in Brisbane on June 2, and again in July when the ship returned to Melbourne, during which they conducted extensive testing of the steering systems, interviewed the crew, and obtained other evidence including various documents and recorded data. Investigators also obtained evidence from the incident pilot and the pilotage provider, AMSA, and port authorities. The team will also verify data and evidence to confirm the order of events, analyse the ship's steering arrangement and operation, review crew actions, and assess shipboard and CMA CGM fleetwide procedures and steering gear guidance, operation, information sharing and testing. A final report will be released at the conclusion of the investigation.