That's very sad news. I used to drink there myself many years ago and, as the following clip from The Hull Packet and Advertiser March 7th 1834 shows, my family have been patrons of the pub for generations. The gentleman mentioned is my great x5 grandfather:

"John Thompson Master of the Sloop Dunn was found drowned in the Old Harbour.
The vessel was tied up at Chapel Lane staithe. George North publican of the Black Boy said the deceased had been in his pub worse for drink the previous night. He had been warned against returning to his boat, the night being so windy. His body was found in the Old Harbour having received a severe blow to the head. The body was removed to the Black Boy Public House. Verdict Accidental Death."

At least they took him back to the pub - it was probably his round!