Ocean Travel

All nations have some form of navy and merchant fleet. Most ships are oar-powered, although there are sailing ships do exist (particularly in the Ilisuaqian Empire and the Agripidian Grand Duchy). Even sailing ships tend to have backup oar systems.
Ilisuaqia has the most well-trained navy, made up of mostly humans and goblins. The Dudlingia Principality, being decentralized, has a small official navy, but they have quite a permissive view of piracy. The Gedian Empire has the smallest navy, and is a bit of a joke.
When looking at the various maps of Lavrentiy, there are 4 levels of water: light blue (within view of shoreline), medium blue (out of sight of shoreline, but within the continental shelf), dark blue (open sea, beyond the continental shelf). In that dark blue sea, monsters lurk- krakens, sea turtles the size of cities, sharks that swim in schools like fish, and creatures beyond imagining. The Agripidian Grand Duchy is the only country with ships that venture out into that open sea, leading to rumors of beast-taming magics. The naga do not discourage this rumor, although none have confirmed it.
Then there's also the and deep dark blue, where not even Agripidian ships dare travel.