et forth very clearly in a summary view, the
Time, Horse-power, Coal, and Cargo for a steamer of good average
quality running on passages of 1,000 miles, 2,000 miles, and 3,000
miles, and at a speed varying from 6 to 18 miles per hour. It will be
observed that a steamer of 3,000 tons can not take power and coal
enough to run on a 2,000 miles passage above 17 knots per hour, and
that one of 3,000 tons also can not run on a 3,000 miles passage at a
speed above 16 knots per hour. Observe the small quantity of cargo and
the large quantity of coal for a steamer of 3,000 tons on a 3,000
miles passage at 16 miles per hour.

COAL AND CARGO TABLE: No. IV.

_Calculated for the mean Displacement of 3,000 Tons._

KEY:
A: SPEED--PER HOUR.
B: HORSE-POWER.
C: WEIGHT OF HULL AND ENGINES.
D: PASSAGE 1,000 NAUTICAL MILES. Time.
E: PASSAGE 1,000 NAUTICAL MILES. Coal.
F: PASSAGE 1,000 NAUTICAL MILES. Cargo.
G: PASSAGE 2,000 NAUTICAL MILES. Time.
H: PASSAGE 2,000 NAUTICAL MILES. Coal.
I: PASSAGE 2,000 NAUTICAL MILES. Cargo.
J: PASSAGE 3,000 NAUTICAL MILES. Time.
K: PASSAGE 3,000 NAUTICAL MILES. Coal.
L: PASSAGE 3,000 NAUTICAL MILES. Cargo.

-----+-----+-----+-----+----+----+-----+----+----+-----+----+----
A | B | C | D | E | F | G | H | I | J | K | L
N. M.|H. P.|TONS.|D. H.|TONS|TONS|D. H.|TONS|TONS|D. H.|TONS|TONS
-----+-----+-----+-----+----+----+-----+----+----+-----+----+----
6| 52| 1252| 6.23| 72|1711|13.21| 144|1675|20.20| 216|1639
7| 83| 1283| 5.23| 98|1667|11.22| 197|1617|17.21| 296|1568
8| 123| 1323| 5. 5| 128|1612|10.10| 256|1548|15.15| 384|1484
| | | | | | | | | | |
9| 175| 1375| 4.15| 162|1543| 9. 6| 324|1462|13.21| 486|1381
10| 241| 1441| 4. 4| 200|1458| 8. 8| 401|1358|12.12| 602|1257
11| 320| 1520| 3.19| 242|1358| 7.14| 484|1237|11. 9| 727|1116
| | | | | | | | | | |
12| 416| 1616| 3.11| 288|1239| 6.23| 577|1095|10.10| 866| 950
13| 529| 1729| 3. 5| 339|1100| 6.10| 678| 931| 9.15|1017| 761
14| 661| 1861| 2.23| 393| 942| 5.23| 786| 745| 8.22|1180| 548
| | | | | | | | | | |
15| 813| 2013| 2.19| 451| 761| 5.13| 903| 535| 8. 8|1355| 309
16| 987| 2187| 2.14| 514| 555| 5. 5|1028| 298| 7.19|1542| 41
17| 1183| 2383| 2.11| 580| 327| 4.22|1160| 37| | |
| | | | | | |