A 17-foot duckboat with a father and son from Havana aboard sank Tuesday afternoon at the mouth of the Apalachicola River just north of the causeway, leaving the older man dead and the younger in need of urgent medical attention.

Linwood Thomas Braswell Sr, 72, of Havana, was declared deceased of unconfirmed diagnosis after emergency medical personnel from Weems Memorial Hospital provided treatment. His son, Linwood Thomas Braswell Jr. 47, was transported for advanced care via Air Med to Tallahassee Memorial Hospital for an undisclosed condition.

According to a report from the sheriff’s office, at about 3:29 p.m. deputies responded to the north side of the John Gorrie Memorial Causeway for reports of a sinking boat with at least two persons in the water.

Upon arrival deputies saw that civilians, as well as officers from the Florida Fish and Wildlife Conservation Commission and Franklin Correctional Institution, were in the water recovering the two men. The report said the elder Braswell was non-responsive and CPR was being administered.

“The other subject took on a lot of water and was extremely fatigued requiring medical attention,” read the report.

An FWC report said the boat was returning to the Old Ferry Dock boat ramp when it took on waves that caused it to sink. Both men had personal flotation devices, although it was unclear whether they were holding them or wearing them at the time, read the report.