The government is conducting market research for a potential Indefinite-Delivery Indefinite-Quantity (IDIQ) contract for ship-to-shore and rail mounted gantry crane maintenance at three sites in North America. The anticipated contract includes a base period of performance from 9 July 2027 through 8 July 2032, with an optional six-month extension. This sources sought is issued for informational and planning purposes only, does not constitute a solicitation, and the government will not reimburse response costs. Interested parties are asked to review the attached request for information and draft performance work statement. Responses should be submitted via email to the specified government contacts.