That definition is intended to identify the vessel subject to inspection as an OSV, it is not intended to describe what OSVs do. Those other operations you describe are likely performed by vessels who are inspected under different requirements. From a regulatory perspective, an OSV is a vessel that is inspected under Subchapter L of Title 46 of the Code of Federal Regulations.
Also, that’s from the United States Code, so it’s not the Coast Guard’s definition, it’s the U.S. Congress. An excusable mistake for someone who would not be expected to understand the nuances of U. S. law. Any definitions from the Coast Guard are found in the Code of Federal Regulations and must be consistent with anything from Congress in the United States Code.
