§140.101(d) lists what may comprise the inspection and §140.101(e) stipulates the recognition of valid international certificates issued to foreign units for matters covered by the certificates, unless there are clear grounds to believe that the unit or its equipment do not meet the particulars of the certificate. §140.101(c) provides for announced and unannounced inspections that may be directed by the Officer in Charge, Marine Inspection (OCMI) to determine if units engaged in OCS activities are in compliance with the applicable requirements of Subchapter N. ![]() The inspection requirements for " vessels" (also defined in 33 CFR 140.10) engaged in OCS activities are listed at 33 CFR 140.101(a) and (c) through (e). Flagged and regulated under 46 CFR Subchapter I or L (see definitions at 46 CFR 90.10-40 and §125.160, respectively).Ī " Unit means any OCS facility, vessel, rig, platform, or other vehicle or structure, domestic or foreign" per 33 CFR 140.10. Note: Energy resources beyond minerals (e.g. wind) are not included in the definition of an OCS activity regulated under Subchapter N, but are included in the in the definition of an Offshore Supply Vessel that is U.S. The key is that the activity must be related to exploration or the ultimate production of mineral resources on the OCS. seismic survey, construction, subsea construction, and well intervention, to name just a few). The definition is broad and includes a whole host of activities beyond drilling and production type activities (e.g. Published 24May2019 updated references 05Jul2022.Īny vessel engaged in an OCS activity is subject to inspection in accordance with 33 CFR Subchapter N, Part 140, Subpart B.Īn " OCS activity means any offshore activity associated with exploration for, or development or production of, the minerals of the Outer Continental Shelf" as defined in 33 CFR 140.10. § 2101(25), this definition is mirrored in Coast Guard regulation 46 CFR 125.160. Nevertheless, when inspected under 46 CFR Subchapter L, operations are limited to those in which the vessel "regularly carries goods, supplies and individuals in addition to the crew, or equipment in support of exploration, exploitation, or production of offshore mineral or energy resources." 1 If a vessel engages in support activities that are beyond the scope of this definition then the vessel must be authorized to conduct the activity under a different type of endorsement (such as 46 CFR Subchapter I, D, or M).ġ See 46 U.S.C. ![]() Over time and in response to the needs of the oil and gas industry, OSVs have become more involved in an increasingly wide range of support services beyond the traditional transportation of goods and people. The definition for OSVs was originally conceived for vessels that transport supplies and offshore workers to offshore facilities engaged in oil and gas exploration, exploitation, and production.
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