A Coast Guard Marine Board of Investigation has been convened and will conduct a thorough and comprehensive investigation to determine casual factors that contributed to the loss of the Stretch Duck 07. However, the Coast Guard and amphibious passenger vessel industry do not have to delay until the MBI has completed their investigation before taking a proactive approach toward the safety of the vessels and their passengers.
Source: Investigations & Casualty Analysis
Link: 8/1/2018: Marine Safety Information Bulletin 06-18, Amphibious Passenger Vessel Operations