Noun
roaring forties pl (plural only)
(geography, meteorology) The area of the earth between 40 and 50 degrees south, prone to gale-force westerly winds.
After a four-week stay on the island both ships left on 8 October using the Roaring Forties to sail east as fast as possible. Source: Internet
ISBN 0-7022-1275-X In 1611 Hendrik Brouwer working for VOC discovered that sailing from Europe to Batavia was much quicker if the Roaring Forties were used. Source: Internet
Starting in Mauritius both ships left on 8 October using the Roaring Forties to sail west as fast as possible. Source: Internet
The severe weather is due to the mountain's jutting into powerful westerly winds of the Roaring Forties which run around approximately 45°S latitude, south of both Africa and Australia. Source: Internet