I'm confused by the wording here. The narrator was captured by sea-raiders (I'm assuming pirates?), so how could his stolen vessel be legitimize?It was in one of the most open and least frequented parts of the broad Pacific that the packet of which I was supercargo fell a victim to the German sea-raider. The great war was then at its very beginning, and the ocean forces of the Hun had not completely sunk to their later degradation; so that our vessel was made a legitimate prize, whilst we of her crew were treated with all the fairness and consideration due us as naval prisoners.
Source: "Dagon" by H. P. Lovecraft