The design, construction and verification of complex two- and three-dimensional shapes in architecture and ship geometry have always been a particularly demanding part of the art of engineering. Before science-based structural design and analysis were applied in the construction industries, i.e., before 1800, the task of conceiving, documenting and fabricating such shapes constituted the most significant interface between practitioner's knowledge and learned knowledge, above all in geometry. The history of shape development in these two disciplines therefore promises especially valuable insights into the knowledge history of shape creation. This volume is a collection of contributions by outstanding scholars in their fields of study, archaeology, history of architecture and ship design, in classic antiquity, the Middle Ages and the early modern period. The volume presents a comparative knowledge history in these two distinct branches of construction engineering.

This book offers an advanced course on "Computational Geometry for Ships". It takes into account the recent rapid progress in this field by adapting modern computational methodology to ship geometric applications. Preliminary curve and surface techniques are included to educate engineers in the use of mathematical methods to assist in CAD and other design areas. In addition, there is a comprehensive study of interpolation and approximation techniques, which is reinforced by direct application to ship curve design, ship curve fairing techniques and other related disciplines. The design, evaluation and production of ship surface geometries are further demonstrated by including current and evolving CAD modelling systems.

This book offers an advanced course on "Computational Geometry for Ships". It takes into account the recent rapid progress in this field by adapting modern computational methodology to ship geometric applications. Preliminary curve and surface techniques are included to educate engineers in the use of mathematical methods to assist in CAD and other design areas. In addition, there is a comprehensive study of interpolation and approximation techniques, which is reinforced by direct application to ship curve design, ship curve fairing techniques and other related disciplines. The design, evaluation and production of ship surface geometries are further demonstrated by including current and evolving CAD modelling systems.

This volume documents the concepts, experiences, results, and conclusions of the ESPRIT project NEUTRABAS (Neutral Product Definition Database for Large Multifunctional Systems). It deals with the development of a database for large multifunctional systems, in particular for ships and their multitudinous, complex subsystems. NEUTRABAS was the first European project aiming at an international standard based on ISO standard 10303 (STEP) methodology to define a comprehensive information model for ships and similar products of complex functionality, which will serve for the exchange and long term storage of product information. NEUTRABAS contributed to the first generation of shipbuilding product models and gained first experiences in implementing databases exploiting the new technology of the STEP standard.

Auf Initiative der GI-Fachgruppe fur "Rechnerunterstutztes Entwerfen und Konstruieren ICAD) " fand im November 1982 an der Technischen Uni- versitat Berlin eine Fachtagung zum Thema des "Geometrischen Modellie- rens" statt, deren Referate und Diskussionen den Inhalt dieses Bandes bilden. UEbergeordnetes Ziel der Fachtagung war es, auf diesem wichtigen Schwerpunktgebiet des CAD-Bereichs eine Bestandsaufnahme uber den in Wissenschaft und Praxis erreichten Stand, insbesondere aus der Sicht des deutschsprachigen Raumes, durchzufuhren und die Bedeutung aktueller Ent- wicklungsziele zu diskutieren. Methoden der Geometriebeschreibung und Geometrieverarbeitung haben in den Anwendungen der Datenverarbeitung in den letzten Jahren eine Schlus- selstellung gewonnen. Im technischen Bereich bildet das Geometrische Modellieren, d.h. die rechnerunterstutzte Beschreibung geometrischer Objekte, eine der wichtigsten methodischen Grundlagen des Computer Ai- ded Design. Trotz der im letzten Jahrzehnt schon erzielten betrachtli- chen Fortschritte auf diesem Gebiet befindet sich die Methodik des Mo- dellierens noch in intensiver Weiterentwicklung. Der Wert der Fachtagung lag daher nicht allein in einer UEbersicht uber ein breites Spektrum des bisher Erreichten, sondern auch in der Gelegen- heit zum Erfahrungs- und Meinungsaustausch zu aufgetretenen Schwierig- keiten, offenen Fragen und zukunftigen Zielen. Aus diesem Grunde sind auch die umfangreichen Diskussionen zu den Referaten in den vorliegen- den Tagungsband voll aufgenommen worden.