The Tangaroa is up north at the moment, taking many water samples at various depths in the East Auckland Current. They had some pretty rough weather with Cyclone Daphne near by. Winds up to 43 knots- I feel sea sick just thinking about it!
The Beaufort Wind Scale is named after Sir Francis Beaufort, an admiral in the British Navy. He developed the scale in 1805 to estimate wind speed by noting how sails move in the wind.
Here is an interesting link