Page:Physical Geography of the Sea and its Meteorology.djvu/459

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THE WINDS OF THE SOUTHERN HEMISPHERE.
433

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 7. 6 6 7 N. 49° W. S. 69° W.
February 6 6 5 6 6 6 N. 46 AV. ,,
March 8 7 7 7 N. 47 W. ,,
April 7 4 6 6 N. 48 W. S. 70° W.
May 8 6 7 7 N. 46 W. ,,
June 9 8 7 N. 43 W. ,,
July 8 8 7 N. 46 W. ,,
August. 6 5 N. 40 W. S. 69° W.
September. 6 8 4 5 N. 50 W. ,,
October 8 6 N. 45 W. ,,
November 6 8 6 7 N. 49 W. ,,
December 6 5 6 6 N. 48 W. ,,
Means 7 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 6 6 N. 54° W. S. 21° E.
February 5 6 7 6 N. 55 W. S. 25 E.
March 6 6 6 N. 55 W. S. 22½ E.
April 6 N. 53 W. S. 22½ E.
May 5 7 6 6 N. 55 W. S. 24¾ E.
June 6 6 6 7 5 N. 55 W. S. 28 E.
July 7 6 6 6 N. 55 W. S. 27 E
August. 5 6 4 N. 55 W. S. 28½ E.
September 7 5 N. 55 W. S. 22½ E.
October 6 N. 56 W. S. 20 E.
November 4 5 N. 55 W. S. 22½ E.
December 6 5 N. 55 W. S. 23 E.
Means 5 6 6 6 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.