Day 72 - Beaufort Scale
Tuesday, June 30th, 2009Guy and Andrew have experienced a variety of wind strengths on their trip across the Indian Ocean. The measurement of these wind forces were made into an objective scale created in 1805 by Sir Francis Beaufort, an Irish-born British admiral. Before this there was no standard scale, so naval weather reports were subjective. The scale was made standard for ship’s log entries on Royal Navy vessels in the late 1830’s and adapted to non-naval use from the 1850’s. In 1906 to accommodate the growth of steam power the descriptions changed to how the sea, not the sails, behaved. The scale runs up to force 12, a hurricane.
Guy and Andrew faced force 9 gusting 10, in the storm of May, which in the open ocean is seriously intense. These winds hit over 50 mph (45 knots) classified as a “strong gale” with wave heights over the top of a chimney on a two storey house. That storm created extensive damage when it hit land and meanwhile it had turned Southern Cross over for seven minutes on it’s path through the fleet. The trend for the wind at this point will be more with them than against, more commonly being under force 3-4 which is just about rowable depending on which direction that it comes from. However, the possibility of a severe storm does still exist, either coming up from the Southern ocean or a tropical cyclone down from the equator. Lets hope that all the crews continue to face calmer seas with favourable winds and currents for the remainder of their row to Mauritius. If you have any questions please leave them in the comments below, we’ll endeavour to get back to you directly.
Flying Ferkins Support Crew out.
To follow our progress please go to the official Woodvale Challenge site.