Translations:FreeCAD-Ship s60 tutorial/4/en

Introduction
FreeCAD-Ship works over Ship entities, that must be created on top of provided geometry. Geometry must be a solid, or set of solids, following criteria must be taken into account:
 * All hull geometry must be provided (including symmetric bodies).
 * Starboard geometry must be included at negatives y domain.
 * Origin (0,0,0) point is the Midship section (Midpoint between after and forward perpendicular) and base line intersection.