The naval architect's and shipbuilder's pocket-book of formulae, rules, and tables and marine engineer's and surveyor's handy book of reference (1884)
Mackrow, Clement · London, C. Lockwood and co. · leaf 213
of gravity in feet. Effect of Gust of Wind on a Ships Sails. The effect of a sudden gust of wind upon a ships sails is, asa rule, to heel her over to an extreme angle of heel of abouttwice the steady angle at which the same constant pressure ofwind would keep her. In fig. 149 let abc be the ships… … i.oO If the wind is steadily applied the ship will remaininclined at a steady angle of heel of 20°, determined by droppingan ordinate at the point of intersection E of the two curves ;but in the case of the same pressure of wind being suddenlyapplied she will heel over beyond the steady angle of…
