The USCG regulations applicable to cranes on FOFs are referenced from 33 CFR 143.120(a) & (b) and are summarized in the following table:

The following cites are NOT required by USCG regulations for FOFs:
§107.258 (Crane certification),
§107.259 (Crane inspection and testing),
§107.260 (Rated load test for cranes),
§109.437 (Crane record book),
§109.439 (Crane certificates), and
§109 Subpart F (Cranes; general operations/maintenance, working loads and operator designation).
While the italicized cites above are not applicable via USCG regulatory requirements, they do provide guidelines that would contribute to increased safety surrounding crane inspection, maintenance, testing and operations. We highly encourage operator’s to voluntarily comply with the criteria listed in these non-applicable cites or with a newer edition of API’s Recommended Practice for Operation and Maintenance of Offshore Cranes (RP 2D). Please note that various aspects of these non-applicable USCG regulations may also be addressed by an operator’s SEMS plan under BSEE regulations.
CFR excerpts for reference:
§143.120(a) Before construction is started on a proposed floating OCS facility, the owner or operator of the facility must submit to the Coast Guard for approval all plans and information listed in subpart C of 46 CFR part 107 which relate to the facility. All plans and information must be submitted according to the procedures in that subpart. [emphasis added]
§143.120(b) The facility must comply with the requirements of subchapters F (Marine Engineering) and J (Electrical Engineering) of 46 CFR chapter I and 46 CFR part 108 (Design and Equipment). Where unusual design or equipment needs make compliance impracticable, alternative proposals that provide an equivalent level of safety may be accepted. These requirements do not apply to production systems on the facility. [emphasis added]
46 CFR 107.309 Crane Plans and Information
(a) Three copies of each of the following must be submitted:
(1) Stress and arrangement diagrams, bill of materials, and supporting calculations for all structural components listed in API Spec. 2C, Second Edition, February 1972 (with supplement 2). [emphasis added]
(2) Drawings of foundations and substructures with supporting calculations for support and stability of each crane under its rated load.
(3) Plans showing the installation of the safety features required in §108.601.
(4) Drawings of the means provided to stop motion and set brakes during a power failure.
Note to §107.309(a)(4): These plans must be submitted to the Coast Guard, if the crane is not certified. If the crane is to be certified, four copies must be sent to the American Bureau of Shipping or the International Cargo Gear Bureau, Inc.
(b) In addition to the plans and information required in paragraph (a), the following plans and information must be submitted to the Coast Guard only:
(1) One line diagrams of the electrical power circuits of the electric power crane overload protection required in Subpart 111.50 of this chapter.
(2) Diagrams of the hydraulic or pneumatic power and control systems, as required by Subpart 58.30-40 or 58.30-50 of this chapter, as applicable.
46 CFR 108.601 Crane Design
(a) Each crane and crane foundation on a unit must be designed in accordance with the American Petroleum Institute Specification for Offshore Cranes, API Spec. 2C, Second Edition, February, 1972 (with supplement 2). [emphasis added]
(b) In addition to the design requirements of paragraph (a), each crane must have the following:
(1) Each control marked to show its function.
(2) Instruments with built-in lighting.
(3) Fuel tank fills and overflows that do not run onto the engine exhaust.
(4) No gasoline engines.
(5) Spark arrestors fitted on engine exhaust pipes.
Published 16Mar2021.