The NTSB investigation for the 1999 sinking of a duck boat has concluded [0]: > Until reserve buoyancy retrofits are completed the Board recommended immediate

The NTSB investigation for the 1999 sinking of a duck boat has concluded [0]: > Until reserve buoyancy retrofits are completed the Board recommended immediate actions to mitigate the danger for vessels without adequate reserve buoyancy including the removal of canopies during water operations or installation of a Coast Guard approved canopy that would not restrict the horizontal or vertical escape of passengers; closing unnecessary access plugs; reduction of through-hull penetrations to the minimum size needed for operation; and installation of independently powered electric bilge pumps. I don't have all the information, but it certainly doesn't look like those recommendations were enacted here. [0]: https://www.ntsb.gov/news/press-releases/Pages/NTSB_Determines_Cause_of_1999_Duck_Boat_Sinking.aspx https://www.ntsb.gov/news/press-releases/Pages/NTSB_Determin...