Each of a series of longitudinal lines or curves marked on a plan of a ship to show its fore-and-aft sections at various distances from the centre line.
船体纵剖线
Example sentencesExamples
And then Erik came by and said that it was better, but that the buttock lines should be straightened out.
Therefore, a semi-displacement boat will have fairly straight and fairly flat buttock lines aft.
The chine and buttock lines will reveal the full bellied shape usually present in this type of hull.
The flat runout buttock lines provide planing speed capacity with minimal drag and maximum stern support.
The basic idea is to mark off a grid on the ground under the boat for buttock line and frame stations.