John William Anderson was 64 and lived on a 40-foot houseboat named the Diver III, anchored near Pennock Island in the Tongass Narrows at Ketchikan, Alaska. On March 12, 2014, the vessel was found adrift near the breakwater in front of a local Safeway, close to the rocks; Anderson was missing. The wood stove aboard was still warm with coals, a meal sat uneaten, and his dog remained on the boat, unharmed but alone.

The U.S. Coast Guard and the Ketchikan Volunteer Rescue Squad conducted an extensive search of the Tongass Narrows using 47-foot motor lifeboats, and Alaska State Troopers investigated. Investigators have advanced the theory that Anderson may have gone on deck during the night of March 11 to check the anchor or secure the boat during a storm and fallen into the cold water; he is presumed drowned. The case remains open and the investigation has not produced further clues.

If anyone knew John, saw the Diver III around March 11–12, 2014, or has information about his disappearance, please share what is known.