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 162
o the middle line of the vessel by thevolume of displacement (see pp. 165 and 175). This calctilationis also generally performed ujDon the displacement paper (seep. 155). Curve of Areas of Midship Section. This curve (see fig. 12S) is used to determine the area of theimmersed part of the midship… … Ktrale- oj areas Fig. 129. 153 which are used for calculatingthe displacement ; set theseareas off along a base line asordinates, in their consecutiveorder, the abscissae of which re-present to scale the respectivedistances between the longi-titdinal water-planes : a curvebent through the…
