The Line Between Limited and Unlimited

I started about six years ago, as an os and I have no doubt that I will hold an unlimited master one day no matter what the path is. Im 24 and enjoy the challenging license structure that forces people outside their comfort zone by going back on deck. Half of 1080 days on deck of an unlimited vessel doesnt really sound that horrible but it is what you make it I suppose. I think my goal is to end up on a construction vessel or drillship and like the tugs I work on now, I would rather spend time on deck to learn the operation.