say you checking for fire arc and its very close then as you are pulling your hands out one of you hits the ship you replace the ship but it is off by 1/8 to 1/4 in or less should you then roll a die to resolve it or person who hit ship concede

You put the ship back as best you can between you, with the person who didn't nudge it getting the final call of whether it's in the right place.

But also note that the rules specify that a small amount of slop and nudging is inevitable and you should be chill about it.

If the two of you said the ship was in range before touching it, when you replacing it, it must still be in range... you place it as best you can close to the original position. Not making it in range of the attack is clearly not as close as possible...

If you hadn't determined, together, whether the ship was in arc before the nudge, we're not going to be able to give you a "should" answer. I can tell you that if I nudged the ship, I'd concede the check. If my opponent nudged the ship and proposed a roll, I'd probably be okay with that too.

If you're in an environment where there's a judge, feel free to invite the judge to decide, but otherwise, find a way forward that everybody can live with.