This new edition of this popular text has been fully updated to reflect SysML 1.3, the latest version of the standard, and the discussion has been extended to show the power of SysML as a tool for systems engineering in an MBSE context. Beginning with a thorough introduction to the concepts behind MBSE, and the theoretical aspects and syntax of SysML, the book then describes how to implement SysML and MBSE in an organisation, and how to model real projects effectively and efficiently, illustrated using an extensive case study.