Ships can not, and have never, held territory.
What they can do is starve or impoverish a nation, or destroy its cities, or place large amounts of troops on its beaches, or even influence its foreign policy with their mere presence - but they cannot actually hold territory. Take territory, maybe, but not hold it.
Men with rifles? A very different story.
Without knowing more details, if I had to pick sides in a scrap, I'd rather be on the ship...but I'm biased in this regard.