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International Standard Iso 19901-1 May 2026
is the primary international standard for determining meteorological and oceanographic (metocean) design and operating conditions for offshore structures in the oil and gas industries. It provides the framework for characterizing environmental factors—such as wind, waves, and currents—that impact the safety and integrity of offshore platforms throughout their entire lifecycle. Core Objectives
ISO 19901-1 acts as a foundational document within the wider series. It is often used in conjunction with: ISO 19901-3 : For topside structures. ISO 19905-1 : For the site-specific assessment of jack-ups. international standard iso 19901-1
The standard provides detailed guidance on various physical phenomena, including: : Modeling mean wind profiles and turbulence intensity. It is often used in conjunction with: ISO
: Considerations for water levels, air and sea temperatures, and ice (though specific arctic requirements are deferred to ISO 19906 ). Relationship to Other Standards : Considerations for water levels, air and sea
: Spectral density and wave height determination for site-specific assessments.
: It outlines the methodology for identifying general environmental conditions and the specific metocean parameters (e.g., wave height, wind speed) needed to describe them.
The standard serves two main purposes in offshore engineering:
