标准编号：ISO/PAS 22853:2005
中文名称：航远和海远技术 计算机应用软件 海上安全置标语言规范 （MSML）
英文名称：Ships and marine technology — Computer applications — Specification of Maritime Safety Markup Language (MSML)
发布日期：2005-10
标准范围
This Publicly Available Specification specifies the XML application MSML (Maritime Safety Markup Language).MSML is a language for structuring information and the goal is to create an open standard that can be usedgenerally in the maritime sector.The basis of MSML is the data model which defines what kind of maritime data, related to vessel and shorebase, it is possible to store. The data model represents the current state and only limited historic information iskept in the data model.This Publicly Available Specification defines perspectives associated with the data model of MSML. The termindicates that the MSML data model can be seen from different views. Perspectives contain information that isorthogonal to the data model.A certain amount of shore base information is included in the data model of MSML. The main reason toinclude this information is to support vessel safety related aspects and vessel repair and maintenance.1.2 LimitationsAn MSML instance will contain extensive history information only if included in the definition of a perspective.For example, repair and maintenance contains an extensive history of what has been changed and when, butthere is no extensive history information for e.g. bunkering. The reason for including history is that actionsmade in the past can affect future events and decisions. However, some minor historic information is includedin the data model of MSML (i.e. not within perspectives), e.g. the history of vessel name changes. If othertypes of extensive history information are needed, a new version of the MSML instance has to be stored foreach significant change and this must be handled outside the scope of MSML (probably using a native XMLdatabase).The data model of MSML should not primarily be seen as a support for normal work onboard. Instead it is anadd-on support for transfers of safety related information to/from the vessel from/to external units and withinthe vessel. For example, current propeller revolutions per minute cannot be extracted from the computerizedMSML system, instead the value is read directly from the ordinary equipment. In the same way the shore basepart of the MSML data model is seen as a support to the safety related vessel information and not from normalwork ashore. Generally, normal dynamic information during a voyage between two shore bases is notincluded within MSML. On the other hand, alarms and malfunctioning units are generally safety related and ofinterest internally and externally and thus included in the data model of MSML. If alarms are set automaticallyor not is a question outside the scope of MSML.1.3 ExclusionsThe following aspects are not included in the scope of MSML:? aspects concerning costs and fees;? geographic information;? logs, e.g. log of communication;? specific cargo information, e.g. tracing, Smart and Secure Tradelanes;? presentation of information;? users and their authorities;? actual use of data and instances, e.g. definition of messages;? bindings to protocols.1.4 SummaryTo sum up the main characteristics of MSML, it? contains an XML-based data model for information exchange and processing in safety-critical maritimeapplications;? does not describe how data is used;? supports information security and extensibility;? is a framework and future open standard for the maritime safety sector.
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