Had a look at 60frames as an animation and found a typo when I was setting up the rotation angles for the background, so there was a horrible jump at frame 30. I badly wanted to tweak some of the timings as well so I've restarted the render and made it a bit longer. Clouds were changing shape too slowly, waves, camera pan and star rotation were too fast... and while I have no moon in the shot, it is a moonlit scene... moon elevation goes from 30 to 0 which then meant tweaking the red decay to make it look more natural.
Also digging back into the memory banks, and I've recreated my progressive render generator in a database I made for my favourite commandline tools... slowly getting back into the swing of things.
Here's one with a low moon elevation (4.4°) ... oh yes.. extended the length to 300 frames.