“ The court declined to order her release, and in the petition now proffered the master seeks a writ of prohibition forbidding further proceedings in the suits and a writ of mandamus commanding that the order denying his application be vacated and another entered releasing the ship. The questions involved are, first, whether the ship of a foreign government which it uses and operates as a merchant vessel is, when within the waters of the United States, immune from process in suits such as have been described ”

“ The claims sought to be enforced in them amount to $80,585 and are for wharfage, fuel, supplies, and other necessaries furnished to the ship at Gibraltar in the course of her voyage and at New York after her arrival. ”