An 18-year-old man, Mark Everett Coates III, remains unaccounted for following the discovery of his capsized boat in the Susquehanna River, Maryland. Coates was last seen near the Thomas J. Hatem Memorial Bridge on 4 November, around 5 p.m., prompting a multi-agency search operation.
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The capsized vessel, a 10-foot aluminium jon boat, was found near Garrett Island on the morning of 5 November. The Maryland Natural Resources Police announced the discovery and initiated immediate rescue efforts. Coates had launched the boat from the Water Street Boat Ramp in his hometown of Havre de Grace, Maryland, and officials are calling on anyone who may have seen him or his boat to come forward.

At the time of his disappearance, Coates was reported to be wearing a bright chartreuse long-sleeved T-shirt and blue jeans. The alarming nature of the situation has resulted in an extensive search operation involving multiple agencies, including the United States Coast Guard and the Chesapeake Search Dogs.
The local fire department, Susquehanna Hose Company, has also been involved in the search. They reported challenges due to the weather conditions in the region, which complicated the deployment of aviation resources essential for the search efforts. Nevertheless, the Coast Guard is developing a comprehensive plan to provide additional support to ground teams searching the river.
In a statement, the Susquehanna Hose Company emphasised the need for the public to avoid the area around Garrett Island, including the Water Street Boat Ramp, to ensure emergency personnel can operate without interruption. Local authorities have been urging boaters and members of the community to steer clear, allowing search teams the necessary space and safety to conduct their operations.
On 6 November, with improved weather conditions, search efforts resumed early in the morning. Maryland Natural Resources Police indicated that search teams had managed to utilise aerial resources intermittently on the previous day as weather permitted.
Authorities are continuing to request assistance from the public. They have encouraged anyone who might have witnessed any boating activity or has relevant information regarding Coates’ whereabouts since he set off from Havre de Grace to contact the Maryland Natural Resources Police at 410-260-8888.
As the search continues, Mark Everett Coates III’s family and friends remain hopeful for his safe return. The community grapples with anxiety and concern over the situation, and the coordinated efforts to locate him reflect the dedication of local and federal agencies in responding to missing person cases.
Updates on the investigation and search operations are expected as rescue teams persist in their endeavours to locate the missing teenager.
