Initially, they were created as patrol aircraft. Development was in 1938-1943, production – from 1945 to 1947. Total produced five or seven flying boats. Later they were re-qualified as marine transport workers.
The remaining four aircraft were converted into fire water bombers, now of them, apparently, only one flies. This board has its own name Hawaii Mars and is in the collection of Fantasy of Flight Kermit Wicks.
Filmed in 2008, but the author posted the video only a month ago as a record from his archive.