Manufacturer’s Written Specification
Specification for the umbilical, the umbilical components and their manufacture, generated by the manufacturer in compliance with requirements specified by the purchaser and this part of ISO 13628. NOTE The specification may be comprised of a multiplicity of documents (design plan, inspection and test plan, test procedures, etc.).
Source: API SPEC 17E, Specification for Subsea Umbilicals, Upstream Segment, Fourth Edition, October 2010. Global Standards