>>96018211
We've got an enormous amount of freedom here. I suggested taking a cue from the Solaris of the Golden Cities mostly because of the nostalgia (it is very applicable beyond that, however, in the series its a relic ship from the Mu Civilization, which are the human-hybrid descendants of aliens, that went to war against Atlantis in lost ages) and also because its only weapon is the sail reflecting the sun into a beam, so it felt appropriate with the Heat Ray.
Pairing that with some weird submarines would probably be enough to underline their status as the most advanced navy of the Deep.