ISO 19901-1:2015给出了确定和使用石油和天然气工业中使用的所有类型海洋结构物的设计、建造和操作的气象和海洋学（海洋气象）条件的一般要求。 这些要求分为两大类: -与一般环境条件的确定有关的，以及充分描述环境条件所需的海洋气象参数； -与海洋气象参数的特征描述和使用有关，用于海洋结构物的设计、施工活动或操作。 讨论的环境条件和海洋气象参数如下: -海洋气象参数的极端值和异常值，在给定的重现期内重复出现，这些重现期远远超过结构的设计使用寿命， -海洋气象参数的长期分布，以海洋气象参数的累积、条件、边际或联合统计的形式，以及 -预计在结构设计使用寿命期间经常出现的正常环境条件。 海洋气象参数适用于: -确定新结构设计的行动， -确定评估现有结构的行动， -移动式海上装置的现场特定评估， -确定服务前和服务后的限制环境条件、天气窗口、行动和行动效果（即结构的制造、运输和安装或退役和拆除），以及 -平台的操作（如适用）。 注:ISO 19905-1中包含了自升式平台现场特定评估的具体海洋气象要求，ISO 19906中包含了北极海洋结构物，ISO 19901-3中包含了上部结构物。

ISO 19901-1:2015 gives general requirements for the determination and use of meteorological and oceanographic (metocean) conditions for the design, construction and operation of offshore structures of all types used in the petroleum and natural gas industries. The requirements are divided into two broad types: - those that relate to the determination of environmental conditions in general, together with the metocean parameters that are required to adequately describe them; - those that relate to the characterization and use of metocean parameters for the design, the construction activities or the operation of offshore structures. The environmental conditions and metocean parameters discussed are: - extreme and abnormal values of metocean parameters that recur with given return periods that are considerably longer than the design service life of the structure, - long-term distributions of metocean parameters, in the form of cumulative, conditional, marginal or joint statistics of metocean parameters, and - normal environmental conditions that are expected to occur frequently during the design service life of the structure. Metocean parameters are applicable to: - the determination of actions for the design of new structures, - the determination of actions for the assessment of existing structures, - the site-specific assessment of mobile offshore units, - the determination of limiting environmental conditions, weather windows, actions and action effects for pre-service and post-service situations (i.e. fabrication, transportation and installation or decommissioning and removal of a structure), and - the operation of the platform, where appropriate. NOTE Specific metocean requirements for site-specific assessment of jack-ups are contained in ISO 19905？1, for arctic offshore structures in ISO 19906 and for topside structures in ISO 19901？3.