Emerald Chain

Each level of a loyalty track grants its own rewards, and reaching the next level keeps the earlier ones. A track gives the same stat again at several levels, and those steps add up rather than replace each other: the ship carries every step up to the track’s level at once. This is worked out from one account’s fights, not confirmed in the game: counting every step, the hull comes out near the hull the fights started on; counting only the latest step, it falls far short.