+------------------------+--------------------------------------------+ | NAME OF SHIP. | Calibre. | +------------------------+--------+--------+--------+--------+--------+ | | 5-inch.| 6-inch.| 8-inch.|10-inch.|12-inch.| | Dolphin | None. | 1 | None. | None. | None. | | Atlanta[53] | ” | 6 | 2 | ” | ” | | Boston[53] | ” | 6 | 2 | ” | ” | | Chicago[54] | 2 | 8 | 4 | ” | ” | | Gun-boat No. 1[54] | None. | 6 | None. | ” | ” | | Gun-boat No. 2 | ” | 4 | ” | ” | ” | | Newark | ” | 12 | ” | ” | ” | | Baltimore | ” | 6 | 2 | ” | ” | | Charleston | ” | 6 | None. | 2 | ” | | Miantonomoh | ” | None. | ” | 4 | ” | | Terror | ” | ” | ” | 4 | ” | | Amphitrite | ” | ” | ” | 4 | ” | | Monadnock | ” | ” | ” | 4 | ” | | Puritan | ” | ” | ” | 4 | ” | | Armored cruiser | ” | 6 | ” | 4 | ” | | Armored battle-ship[55]| ” | 6 | ” | None. | 2 | | 2 Gun-boats | ” | 12 | ” | ” | None. | | 2 Cruisers | ” | 24[56]| ” | ” | ” | | Floating batteries | ” | None. | ” | ” | 8[56]| +------------------------+--------+--------+--------+--------+--------+ This gives a total of two 5-inch, one hundred and three 6-inch, ten 8-inch, twenty-six 10-inch, and ten 12-inch. In his last report, Captain Sicard, Chief of Ordnance, states that “for the new ships approaching completion we have eighteen 6-inch, three 8-inch, and two 5-inch guns finished, and three 6-inch and five 8-inch well advanced, together with all the carriages for the _Atlanta_ and _Boston_, and all for the _Chicago_, except the 8-inch.... With brown powder the following are the best results obtained in the 6-inch and 8-inch guns. +-----------+--------------------+---------------+-----------+ | GUN. | Powder. | Muzzle | Pressure. | | | | Velocity. | | +-----------+--------------------+---------------+-----------+ | | | Foot seconds. | Tons. | | 6-inch | American Brown. | 2,105 | 15.6 | | 8-inch | Westphalian Brown. | 2,013 | 15.5 | +-----------+--------------------+---------------+-----------+