When Willy (Peter Lupus) dives off the yacht and is apparently abandoned in the ocean, a shot of him being left in the yacht's wake shows a corner of the boat from which the camera is shooting the scene.
When the boat with the MI agents is tied up at the dock, it is flying an American flag on the bow. A few minutes later when it departs the flag is no longer there, and a possible Camaguan flag is flying on the main mast.
The Republic of Camagua has armed forces that are too large for such a small country-island. Nevertheless, they were unable to detect the yacht and the IMP ship along their own coast.