>>54783396Yep, there's definitely a few Nautical themes in the game, but it makes sense for a region based on Spain on Portugal.
Area Zero and the Scarlet/Violet Book might be both based on Jules Verne's stories "Journey to the Center of the Earth" and" Twenty Thousand Leagues Under the Seas", plus the general Age of Discovery of which Iberia played a huge role in. The first DLC story is also a reference to the latter since the Tera crystals there originated from a Paldean trader who came to the Kitakami region hundreds of years ago. Japan and Portugal also had a lot of trade going on back then.
Don't forget that the compass is also a consistent visual theme in the game. Possibly more a reference to the open world theme, but still, compasses are also very important to nautical travel. It's the loading screen icon, and the icon of the Pokémon League in Paldea (all E4 members and Geeta have the symbol on their gloves).
This one is maybe a bit of a stretch, but Penny's story is all about constellations. Her alias is Cassiopeia, and all the Team Star bases are named after the 5 brightest stars within the Cassiopeia constellation. Celestial navigation used to be extremely important for long distance nautical travel.