Guess it would be nice to have 5 that shows off different parts of the game (weather, combat, etc) not just like 5 images that shows almost the same thing so here's the 5 I'd choose:
(just gonna use the image names, guess it's easier than trying to describe them)
"deck1", "storm1", "battle1", "victory5" and "fleet3"
I think those give off all the varying aspects that you can get from all the pictures.
Gaming sites:
www.rockpapershotgun.com
That's it, rps is the sole site that I need, that and /r/gamernews and /r/games, those 2 usually sums up all the important things worth mentioning about games.
//edit ones again, - least favorite images and reason:
"battle2", I'd refrain from using it just because of the jaggy background-mountains.
"brig3", I guess that's the moon behind the sails, it just looks a bit weird and the overall picture is just a bit dull
"brig4", I'm not a big fan of the colour that the fog has
"storm", it could have been a lot better but it just seems to lack things, stormy clouds, a better view of the ship, just something
"victory4", I actually like this and all of the other pictures but you wanted the 5 that I liked the least the left-front looks a little bit blurry, brings down the quality if the image just a little bit