"This isn't a building, just a small rach for kayaks. "
The place has gone or never existed. A CoMaps user reported that the POI was visible on the map (see snapshot date below), but was not found on the ground.
OSM snapshot date: 2025-05-15T17:20:20Z
POI has no name
POI types: building
#CoMaps android

"No fuel is located here"
OSM snapshot date: 2025-05-15T17:20:20Z
POI name: Fathom Marine
POI types: amenity-fuel
#CoMaps android