It does not matter really. I had a similar situation. Mine does not have a limitation on it. At one time it did have the 6000 tons ITC on it, but really by definition an OSV can not be larger than 6000 tons. With that said it won't matter unless they raise the limitation of OSV's to exceed 6000 tons. I would want it to just state Master OSV, also. I had a time just getting them to add the Oceans onto the OSV license. Finally after a few years of trying I got it on there. The first time I applied for my Oceans endorsement I got my license back and they took my 6000 ton endorsement completely off and said that I should have never had it. Never mind I had it for several years and was authorized to sign people off on Large OSV's. It was easily taken care of, but just an example of how things can be mis-interpreted. Keep going Azimuth and when you get your Master's license it won't even matter.