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THE WINDS OF THE SOUTHERN HEMISPHERE.
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Average Speed of Vessels sailing through the Trade-winds of the North Atlantic and South Indian Oceans.
Month. | Knots per Hour from | |||||||||
10° to 15°. | 15° to 20°, | 20° to 25°. | Average. | Course steered through. | ||||||
N.E. Trades. |
S.E. Trades. |
N.E. Trades. |
S.E. Trades. |
N.E. Trades. |
S.E. Trades. |
N.E. Trades. |
S.E. Trades. |
N.E. Trades. (N. Atlantic) |
S.E. Trades. (I. Ocean) | |
January | 8 | 6½ | 7½ | 7. | 6 | 6 | 7 | 6½ | N. 49° W. | S. 69° W. |
February | 7½ | 6 | 6 | 6¾ | 5 | 6 | 6 | 6 | N. 46 AV. | ,, |
March | 8 | 7 | 7 | 7 | 5¼ | 6½ | 6¾ | 6¾ | N. 47 W. | ,, |
April | 7¼ | 7 | 5¾ | 7¾ | 4 | 6 | 6 | 6¾ | N. 48 W. | S. 70° W. |
May | 8¼ | 8 | 6¾ | 7½ | 6½ | 6 | 7 | 7 | N. 46 W. | ,, |
June | 9 | 7½ | 8 | 7¾ | 5¼ | 7 | 7½ | 7½ | N. 43 W. | ,, |
July | 5½ | 8 | 8 | 8¼ | 6¼ | 7 | 6½ | 7¾ | N. 46 W. | ,, |
August. | 4¾ | 7¾ | 6 | 8¼ | 4¾ | 7½ | 5 | 7¾ | N. 40 W. | S. 69° W. |
September. | 5½ | 8½ | 6 | 8 | 4 | 6¾ | 5 | 7¾ | N. 50 W. | ,, |
October | 7½ | 8¼ | 6¾ | 8 | 6 | 5¾ | 6¾ | 7¼ | N. 45 W. | ,, |
November | 6 | 8 | 6 | 7 | 4½ | 5¼ | 5½ | 6¾ | N. 49 W. | ,, |
December | 6 | 6½ | 6¾ | 6¾ | 5½ | 5 | 6 | 6 | N. 48 W. | ,, |
Means | 7 | 7¾ | 6¾ | 7½ | 5¼ | 6¼ | 6¼ | 7 | N. 47° W. | S. 69¼° W. |
Average course steered throug-h the N.E. trades (N. Atlantic Ocean N.W. ¼ W.
,,,,S.E. trades (South Indian,,), W.S.W.
Average ditto through the Trade-winds of the North and South Atlantic Oceans.
Month. | Knots per Hour from | |||||||||
25° to 20° | 20° to 15°. | 15° to 10°. | Average. | Course steered through. | ||||||
N.E. Trades. |
S.E. Trades. |
N.E. Trades. |
S.E. Trades. |
N.E. Trades. |
S.E. Trades. |
N.E. Trades. |
S.E. Trades. |
S.E. Trades. (S. Atlantic) |
N.E. Trades. (N. Atlantic) | |
January | 6 | 5 | 5¾ | 5½ | 5¾ | 7½ | 6 | 6 | N. 54° W. | S. 21° E. |
February | 4½ | 5 | 5½ | 6½ | 6 | 7 | 5¼ | 6 | N. 55 W. | S. 25 E. |
March | 6½ | 4¾ | 6 | 6½ | 6 | 7½ | 6 | 6¼ | N. 55 W. | S. 22½ E. |
April | 5½ | 5½ | 5½ | 6½ | 6¾ | 7¾ | 6 | 6½ | N. 53 W. | S. 22½ E. |
May | 5¾ | 5 | 5¾ | 6½ | 6½ | 7 | 6 | 6 | N. 55 W. | S. 24¾ E. |
June | 5¾ | 6 | 6 | 6 | 7 | 5 | 6¼ | 5¾ | N. 55 W. | S. 28 E. |
July | 5¼ | 7 | 6 | 7½ | 6¼ | 4½ | 6 | 6 | N. 55 W. | S. 27 E |
August. | 5 | 5½ | 5¾ | 6½ | 6 | 4 | 5¾ | 5¼ | N. 55 W. | S. 28½ E. |
September | 5½ | 3¼ | 6¼ | 5½ | 7 | 5 | 6¼ | 4½ | N. 55 W. | S. 22½ E. |
October | 5¼ | 4¼ | 6 | 4½ | 5¼ | 4¾ | 5½ | 4½ | N. 56 W. | S. 20 E. |
November | 6½ | 4 | 6½ | 5¼ | 6¼ | 5¾ | 6½ | 5 | N. 55 W. | S. 22½ E. |
December | 5½ | 4¾ | 5¾ | 6 | 6¼ | 7¾ | 5¾ | 5 | N. 55 W. | S. 23 E. |
Means | 5½ | 5 | 5¾ | 6 | 6¼ | 6 | 6 | 5¾ | N. 55° W. | S. 24° E. |
Average course steered through the S.E. trades (S. Atlantic), N.W. by W.
,,,,N.E. trades (N. Atlantic-), S.S.E.