Section 128.110 - Equipment and systems(a) Except as provided by this part, the design, installation, testing, and inspection of materials, machinery, pressure vessels, and piping for OSVs of less than 6,000 GT ITC (500 GRT if GT ITC is not assigned) must comply with subchapter F of this chapter.(b) Except as specifically provided by § 128.310 , the design, plan approval, installation, testing, and inspection of materials, machinery, automation, pressure vessels, and piping for OSVs of at least 6,000 GT ITC (500 GRT if GT ITC is not assigned) must comply with subchapter F of this chapter.(c) This part contains requirements for equipment and systems commonly found on an OSV. If additional or unique systems, such as for low-temperature cargoes, are to be installed, they must comply with subchapter F of this chapter.USCG-2012-0208, 79 FR 48936 , Aug. 18, 2014