ISO 19901-6:2009为海上作业的规划和工程设计提供了要求和指导，包括执行海上作业所需的组件、系统、设备和程序的设计和分析，以及为安全执行这些操作而开发的方法或程序。 ISO 19901的本部分适用于海洋结构物的海上作业，包括钢和混凝土重力基础结构（GBS）；桩式钢结构和柔性塔；张力腿平台（TLP）；深吃水浮子（DDF），包括桅杆或深吃水沉箱船（DDCV）；浮式采油半潜式平台（FPS）；浮式生产、储存和卸载船（FPSO）；其他类型的浮式生产系统（FPS）；移动式海上装置（MOU）； 上述任何组件的上部结构和组件；海底模板和类似结构；重力锚、堆锚、拖曳锚和吸力锚或其他锚；钢筋束基础；以及相关的系泊系统。 本文件也适用于现有结构的修改，例如安装额外的上部模块。 ISO 19901的本部分不适用于以下海上作业: -施工活动，例如在没有暴露于海洋环境的陆上制造场； -钻井、加工和石化活动； -结构物使用寿命期间的常规海洋活动； -从移动式海上钻井装置（MODU）进行钻井； -管道、流线、立管和脐管的安装； -潜水。

ISO 19901-6:2009 provides requirements and guidance for the planning and engineering of marine operations, encompassing the design and analysis of the components, systems, equipment and procedures required to perform marine operations, as well as the methods or procedures developed to carry them out safely. This part of ISO 19901 is applicable to marine operations for offshore structures, including steel and concrete gravity-base structures (GBS); piled steel structures and compliant towers; tension leg platforms (TLP); deep-draught floaters (DDF), including spars or deep-draught caisson vessels (DDCV); floating production semi-submersibles (FPSS); floating production, storage and offloading vessels (FPSO); other types of floating production systems (FPS); mobile offshore units (MOU); topsides and components of any of the above; subsea templates and similar structures; gravity, piled, drag-embedded and suction or other anchors; tendon foundations; and associated mooring systems. This document is also applicable to modifications of existing structures, e.g. installation of additional topsides modules. This part of ISO 19901 is not applicable to the following marine operations: — construction activities, e.g. in a fabrication yard onshore, where there is no exposure to the marine — environment; — drilling, processing and petrochemical activities; — routine marine activities during the service life of the structure; — drilling from mobile offshore drilling units (MODU); — installation of pipelines, flowlines, risers and umbilicals; — diving.