I think just a Dialog box saying, "Ok" or "Cancel" would be a better choice. So you know
what you are doing , and you didnt accedentally hit the wrong button.

so

There is a perfect way to do this. Every time you make a change to a sailor you get an undo option for that change. As soon as that sailor gains a single point of experience, you can no longer undo that change. This works much better than losing the undo ability after you leave the port. It is still impossible to exploit, but it gives you a little more time to correct mistakes.

yep, only sailor.
leave the port you can't undo.
tnks itry lol

i think this would be ok as long as you could only use it as soon as you make the mistake: as soon as you leave the port you can't undo. But I do believe it asks you if you're sure before you selecT the sailor class, so just be more careful.

iI ask only to be of an one step backward an alone time

no...that would take away the stragedy of the game. If you had a undo button..people could change sailors all the time whenever they wanted...elimnating the need to level sailors.

NO!

If you make an undo button, the strategy of creating a good crew, and the knowledge you learn about making these as you play the game would be completely useless. Older players would be able to, in essence, cheat, and change restorers to repairers, or gunners to torpedo men. It would make the game a lot less interesting.