I've never seen a tattoo removed that looked anywhere near right. I would say don't do it, I don't think you would be happy with the results.
It wouldn't solve your problem but if any are even slightly off color you may want to consider a coverup instead and then just deal with it.
Consider starting on a smaller boat
where you, for the most part, only deal with the owners and other crew, not any kind of paying public. If they are accepting of your ink after the interview then you are in!
How much money
do you need? You may initially hook up with a couple or a family
on a boat and work
with them to build experience but expect minimal to no pay. Once you have some experience you will look better on paper and may help you over the ink hurdle.