Done!
Mirevárs Sevérin, master; and Anárik Kovalénski, commander, of the Egálya.
I'm going to make them fall in love, but in the kind of way that MAYBE I could if I ever fell in love. VERY slowly, professional respect -> intellectual connection -> trust -> friendship within naval hierarchy -> romantic feelings that they do not initially pursue because it would be on unequal ground -> circumstances separate them -> years later reunited -> awkward -> reconnect -> yei! -> marry
Mirevárs is going to be involved in a mutiny and tried and dismissed, so she becomes a hrydrographer and cartographer, which suits her inquisitive mind better and away from strict naval discipline and hierarchy. They are reunited on an expedition, Anárik is the captain of the expedition's ship.
Also, she's asexual