Once your ship hits maximum affection, it's possible to marry them by offering a Ring of Promise. One is given as a quest reward for maxing a ships affection, others can be bought for 600 diamonds.
First to prepare for marriage, go to the dockyard and check the stats of the ship you want to marry, She will have a heart icon next to her name. Clicking it will bring a screen up like this
In this case, Ajax's affection is 90 out of 100, thus unable to be married. It does however tell you how close you are, as she has a pink heart she is rather close to maxing out.
Another way to tell if a ship is eligible to be married is on there smaller icon. Once they max affection a heart appears on there mini-picture like so.
Once you've decided on a ship to marry, have a Ring of Promise and she has maxed affection when you check her affection info, the heart in the bottom right will light up. Clicking it will bring up a confirmation screen.
This confirms you want to use the ring on the girl as well as notifying her maximum stats go up slightly after. Once you confirm you're taken to the ceremony which is rather cute and rather involving. After the ceremony you're given a marriage certificate which includes your date of marriage and is what shows whenever you check that ships affection. More importantly, after it all you get a chance to rename her
The ships default name will be already entered, keeping the box ticked you can rename her and click accept, or decline the option to rename her. If you are worried you might regret the choice of name, you are given a chance to rename her again 30 days later. This, as well as the other visual effects of a married ship are visible in PVP and if she's set as your home screen ship.
A married ship gets various visual effects, their heart-shaped emotion gauge becomes a sparkling ring, their image frame changes as well, to a silver and pink border with hearts and has an animated reflection effect.
Certain ships also unlock a special wedding dress CG + backyard/battle sprite.
| List of ships with wedding CGs | ||||
|---|---|---|---|---|
| Illustrious, Vampire, Akagi | ||||