Does this from the source help?
“...he was under the influence of alcohol, and that the boat’s running lights were not on...”
"Several witnesses on shore, including a retired law enforcement officer, said the running lights were on. Tellingly, these witnesses had to be forced upon law enforcement officials, who had said they didn't need any more testimony. Furthermore, William Chilcott, a marine safety scientist, has testified that Beats Workin' II's running lights had been on and went off at the instant of impact."
Seems like the cops don't necessarily want to know the truth. Typical corrupt LEA trying to cover up for one of their own.