Butler prepared an estimate for building a forty gun ship rated at 1300 tons. Included is an estimate of expenses in maintaining a crew of 350 for one year. Costs are based on present circumstances and not based on construction costs during Revolutionary War Ship will have two decks for batteries. Guns assumed to be 24 pounders, though 18 pounders would do. Suggests 4 eight inch howitzers. Will also provide estimate for a brigantine.