8-inch | 55 cwt. | 7. | 7. | 6. | 5.50 | 4.
----------------------+------------+-----+-----+-------+--------------+-----

N.B.--Two projectiles are not to be fired from any gun at the same
time, except at objects within 200 yards' distance, and only when
the advantages at the moment may be deemed by the Captain
sufficient to justify the risk of injuring the guns and their
equipments by the extra strain to which they will be exposed.

With the 15-inch guns at close quarters against iron-clads, 60 lbs.
and a solid shot _may_ be used for 20 rounds. So also with the
11-inch, 30 lbs. and a solid shot. With all the other guns, under
like circumstances, and where penetration is desired, the _distant_
firing charges should be substituted for the _near_ firing.

Of the service charges, one-tenth shall be for distant firing,
six-tenths for ordinary firing, three-tenths for near firing, or for
two projectiles. Saluting charges to be of under-proof powder.

The calibre and class of guns for which the cartridges are intended
must be distinctly marked near the top of the lid end of the tanks.

161. TABLE OF CHARGES FOR NAVY RIFLE GUNS.

----------+------------------------------+--------------------------------
| ORDNANCE. | CHARGE OF POWDER.
+------------------------------+--------------------------------
GUN. | | | | | |Diameter of
| Calibre.| Diameter | Weight. | Weight. | Kind. | Cartridge-
| | of Bore. | | | | Gauge.
----------+---------+----------+---------+---------+---------+------------
| Pounder.| Inches. | Lbs. | Lbs. | | Inches.
Parrott | 100 | 6.40 | 9,700 | 8. | Rifle. | 5.50
Do. | 60 | 5.30 | 5,400 | 6. | Rifle. | 4.60
Do. | 30 | 4.20 | 3,550 | 3.25 | Cannon. | 3.70
Do. | 20 | 3.67 | 1,750 | 2. | Cannon. | 3.25
Dahlgren | 20 | 4.00 | 1,340 | 2. | Cannon. |
Do. | 12 | 3.40 | 880 | 1. | Cannon. |
----------+---------+----------+---------+---------+---------+------------

162. POWDER-TANKS.

------------+---------------------------+----------------+---------------
| EXTERIOR DIMENSIONS. | |
+---------------------------+