Forces on sails to stay within the limitations of a craft's stability and power requirements, which are functions of hull (for boats) or chassis (for land craft) design. Sails derive power from wind that varies in time and with height above the surface. In order to do so, they are designed to adjust to the wind force for various points of sail. Both their design and method for control include means to match their lift and drag capabilities to the available apparent wind, by changing surface area, angle of attack, and curvature. Wind speed increases with height above the surface; at the same
Scarlet Sails (band) show. At the time of their meeting, Brian had recently joined the American folk punk band Violent Femmes. In March 2014, the two were married in New York City. In the interim, he collaborated with Olya, recording their first EP as Scarlet Sails in late 2015. In December 2015, Brian left Violent Femmes to dedicate his time to Scarlet Sails. Their self-titled EP, produced by Martin Bisi, was released January 15, 2016. In the summer of 2016, they embarked on their first US tour with Nina Diaz of Girl in a Coma, starting in Boston. They recorded their debut album,