An event that has resulted in any of the following:1. The death of, or serious injury to, a person that is caused by, or in connection with, the operations of an IWT vessel; or2. The loss of a person from an IWT vessel that is caused by, or in connection with, the operations of an IWT vessel; or3. The loss, presumed loss or abandonment of an IWT vessel; or4. Material damage to an IWT vessel; or5. The stranding or disabling of an IWT vessel, or the involvement of an IWT vessel in a collision; or6. Material damage to the inland waterways infrastructures external to a vessel; that could seriously endanger the safety of the vessel or another vessel or an individual: or7. Damage to the environment brought about by the damage of an IWT vessel or IWT vessels being caused by, or in connection with, the operations of an IWT vessel or IWT vessels.