ship's nationality

"Any idea of the ship's nationality or where it came from?"

We don't even know that ship's nationality.

The attack was made despite Mexican neutrality, presumably because the ship's nationality had been indiscernible in the dark.

After this mutiny, the ship is the hero's and he is located a short distance from a major city of the ship's nationality.

He wants the ship's nationality.

When Bingham had Little Belt signal President asking for identification and received none, he noticed a blue pennant designating the ship's nationality.