(a) When alteration or repair of boilers, pressure vessels, machinery, safety valves or piping systems becomes necessary, the work must be done under the cognizance of the Officer in Charge Marine Inspection. It must be done in accordance with the regulations in effect at the time such vessel or installation was contracted for or built (whichever is latest), or in accordance with the regulations in effect for new construction.

(b) When alterations or repairs are made to a U.S. flag vessel in a port or place not in the United States, a notice containing details of the proposed alterations or repairs must be submitted to the appropriate Officer in Charge, Marine Inspection.