There is a Catalina embedded in the trees at the eastern shore of the lagoon in Diego Garcia. It was blown onshore during a Cyclone in 1943 and is still there. There's a lot of corosion and large chunks missing, but was still recognisable as a Catalina when I last saw it about a year ago. But anyone wanting to salvage it will have to cut down several large coconut palms, and then evict the hundreds of land crabs that have made it their home!