Photo: Donvictorio Skuld would like to bring to our Members' attention the United Kingdom's Marine Accident Investigation Branch's (MAIB) Accident Investigation Report 22/2017 which highlights the dangers of misuse of an electronic chart display and information system (ECDIS) in passage planning and monitoring. The report highlights a number of systematic failures in the planning and execution of the passage, including the disregarding of alarms on the ECDIS which may have prevented the vessel from grounding. The report's synopsis is below. At 0248 (UTC+1) on 3 December 2016, the bulk carrier Muros ran aground on Haisborough Sand on the east coast of the United Kingdom. Attempts to manoeuvre clear of the shallows were unsuccessful but the vessel was re-floated 6 days later with tug assistance. There were no injuries and no pollution, but damage to Muros's rudder necessitated the vessel being towed to Rotterdam, Netherlands, for repair. The MAIB investigation identified, inter alia: The vessel was following a planned track across Haisborough Sand. The passage plan in the ECDIS had been revised by the second officer less than 3 hours before the grounding and it had not been seen or approved by the master. A visual check of the track in the ECDIS using a small-scale chart did not identify it to be unsafe, and warnings of the dangers over Haisborough Sand that were automatically generated by the system's 'check route' function were ignored. The second officer monitored the vessel's position using the ECDIS but did not take any action when the vessel crossed the 10m safety contour into shallow water. The effectiveness of the second officer's performance was impacted upon by the time of day and a very low level of arousal and she might have fallen asleep periodically. The disablement of the ECDIS alarms removed the system's barriers that could have alerted the second officer to the danger in time for successful avoiding action to be taken. The MAIB has recently investigat