half-breadth plan

[haf-bredth, -bretth, -breth, hahf-]

noun Naval Architecture.

a diagrammatic plan of one half of the hull of a vessel divided lengthwise amidships, showing water lines, stations, diagonals, and bow and buttock lines.

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019