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 187
icles in any siibsurface or subsurface of equalpressure horizontal when imdisturbed ,• the form of wave-surfacethus formed being trochoidal (see fig. 140), as also the form ofany subsurface (see fig. 141), the only difference being that whilethe diameter of the rolling circle of the subsurface… … v v/ V V V- V V V V V, v are columns of water winch are vertical in still water,s, s are subsurfaces of equal pressure horizontal in still water. Formula. T = periodic time of wave in seconds. L = length of wave in feet. V = velocity cf advance of wave in feet per second. RULES FOR SEA WAVES. 179…