| At | 13 | feet | distance | for | firing | at | 30 | degrees. |
| 21 | feet | ” | ” | ” | at | 20 | ||
| 30 | feet | ” | ” | ” | at | 15 | ||
| 40 | feet | ” | ” | ” | at | 10 | ||
| over an epaulment of 8 feet high. | ||||||||
See also the word [Battery].
POINT BLANK.—For the point blank ranges of different pieces of ordnance, see the different natures.
The French point blank or but en blanc, is what the English artillery call the line of metal elevation; in most guns between one and two degrees.
PONTOONS.—
| Length at |  | top | 21 | ft. | 6 | in. |
| bottom, | 17 | 2 | ||||
| Width, | 4 | feet | 9 | inches. | ||
| Depth, | 2 | feet | 3 | inches. | ||
| Equipage of One Pontoon. | ||||||||
| Ft. | In. | Ft. | In. | In. | ||||
| 4 Baulks | 22 | 8 | long | 1 | 0 | wide | 4 | thick. |
| 1 Gang-board. | 22 | 0 | ” | 1 | 0 | ” | 2½ | ” |
| 6 Chesses, | 11 | 6 | ” | 2 | 4 | ” | 1½ | ” |
| 2 Oars. | 1 Cable |
| 1 Anchor. | 1 Sheer-line. |
| 1 Graplin. | 1 Boat hook. |
| 1 Setter. | 1 Maul. |
| 4 Iron bolts, with keys. | 4 Pickets. |
| 2 Mounting bars. | 1 Small pump. |
| 4 Binding sticks. | 1 Windlass. |
| 4 Spring lines. | 1 Pontoon carriage, complete. |
| 4 Faukes. |
Dimensions of Colonel Congreve’s Wooden Pontoons.