Issuma is underway, having left Brazil for an expected 1 week off-shore journey south. Richard describes HERE, in his typically accurate, matter of fact way, how the newly adapted anchor broke loose as the winds unexpectedly built, and how the sharp edges of the steel shank shredded the lines he used to secure the beast.
Force 7, a "near gale" on the Beaufort scale is average winds 28-33 kts. But gusts can be expected to exceed the average by 20%. So 28-33 gusting to 40 KNOTS is the picture. Add 1/7 to get maximum gusts of 45 mph.
The sea state in Force 7 conditions is