: Maritime work is dynamical. As the ship sails, conditions change and so do the information needs. If instrumentation is to keep pace with these changing demands, it must be flexible and tailorable. Since, in addition, self-description and verbalization are important ingredients in maritime work, the system too must be able to present its inner state in a comprehensible manner. Keywords: adaptation, maritime instrumentation, work analysis, anthropological research, mulltimedia 1 Introduction This paper reports on ongoing research on maritime instrumentation at the Danish Center for Human Machine Interaction. The maritime domain is a very dynamic one, and this made us re-think basic assumptions in systems design. The paper starts by diagnosing the theoretical problem; Section 3 presents the empirical findings that made the problem visible. Section 4 draws practical consequences of the empirical studies, and Section 5 suggests a set of more radical consequences. 2 System and Usage: C...