Good job on these. It must have been fun to spend time on that yacht. The HDR doesn't look edgy, no, but some of those window views are even darker and more contrasty than the interior.
If I was being really picky I would say the interiors are a little dark and lack sparkle (a downside to some HDRs), and the exterior (through the windows) should not be the same exposure as the interior but should be at least 1 stop over the interior - to make it more realistic. There is nothing worse than a lovely sunny day and having a interior photo with the exterior matching or being darker than the interior