It had been decided, should Admiral Cervera's fleet be discovered in Santiago Bay, that Commodore Schley should unload the collier _Merrimac_ as quickly as possible, and then sink the craft directly across the channel at the narrow entrance. If this was accomplished, it would make it impossible for the Spanish warships to escape until the sunken wreck was blown up and cleared away, and in the meantime several other available American vessels could be hurried to the scene of action. A number of spies had been sent ashore, and at last the commodore was positive that the enemy was just where he wanted him. "And now we'll sink the _Merrimac_ and bottle him up," he said. The _Merrimac_ was an iron steamboat of five thousand tons' burden. She had previously been a "tramp" steamer; that is, one going from port to port, picking up any cargo that came to hand. She carried a large quantity of coal for the various ships, and, as we already know, had followed the Flying Squadron from Key West to Cienfuegos and the present ocean territory. She was a heavily built craft, carrying two masts, and just the right sort for the plan now at hand. A heavy salute on the morning of June 1 announced the coming of Admiral Sampson with a number of additional warships,--the _New York_, _Oregon_, _Mayflower_, _Porter_, and others. The _New York_, it may be added here, was a cruiser, similar to the Brooklyn, only somewhat smaller. The _Oregon_ was a battleship of the first class, of over ten thousand tons' displacement, and carried four 13-inch, eight 8-inch, and four 6-inch guns in her main battery, over twenty guns in her secondary battery, besides several Gatling guns and three torpedo tubes. This noble vessel had just made a record for herself by steaming, at full speed, from San Francisco, around Cape Horn, to our eastern coast, without a break-down,--a journey without precedent for a heavy battleship, so far as our own navy was concerned. In the past, foreign critics had imagined that our vessels were not quite as good as theirs in thoroughness of build; now these critics were silenced, and they stood looking on, and wondering what those "clever Yankees" would do next. The _Merrimac_ had been under the command of Captain James Miller, but now she was eased of a large quantity of her coal, and turned over to Lieutenant Richmond P. Hobson, an assistant naval constructor. Hobson had his plans arranged in detail for sinking the _Merrimac_, and all he asked for was a crew of six or seven men, to aid him in running the collier into the harbor channel. "I know it looks like certain death to go in," he said, "and therefore I want only volunteers with me."