Airship Guide

[Magistrella]

Yea, the rating itself is not the important part as it's an arbitrarily assigned letter, but the bonus exp that you get can influence the rating (namely on the last sector visited I think is what people's voyages suggested?). If you were wondering how to increase your bonus exp, you want to increase your retrieval stat (and also maybe surveilance stat?), as your ship gets more exp for bringing back larger quantities of items.

Its not just the quantities but as well if you get dual items and what winds show up. But then you can get high winds optimal retrieval on both items and still get an Abysmal (Which rates as C and gives no bonus exp) in the end... so, meh rng is rng ^^