The Department of the Navy, Naval Surface Warfare Center Carderock Division (NSWCCD), announces Solicitation No. N0016727R0005 (previously N0016726R1009) for the Environmental and Ship Motion Forecasting Follow-On (ESMF FO) program. This requirement is being solicited as a full and open competition. The Government intends to award one single-award, Cost-Plus-Fixed-Fee (CPFF), indefinite-delivery, indefinite-quantity (IDIQ) contract with a five-year ordering period. To access the solicitation and available attachments, prospective offerors shall refer to the attachments and links associated with this notice. * Attachments 01 through 06 are subject to Distribution Statement D and are authorized for distribution only to the Department of Defense and U.S. DoD contractors. To request and receive these attachments, prospective offerors must possess an active registration in the System for Award Management (SAM.gov) and a verified, active Joint Certification Program (JCP) certification supported by an approved DD Form 2345. JCP information is available at https://www.public.dacs.dla.mil/jcp/ext/#. * Prospective offerors requesting Attachments 01 through 06 shall submit their request to Joseph Estrella at Joseph.l.estrella.civ@us.navy.mil, with copies to Michael L. Jones at michael.l.jones5.civ@us.navy.mil and William Finke at william.g.finke.civ@us.navy.mil. The request email shall include the companys CAGE Code and use the following subject line: N0016726R1009. [Insert Company Name]. Request Copy of Attachment 01 through 06. * All questions regarding this solicitation should be submitted through the Procurement Integrated Enterprise Environment (PIEE) Question and Answer Solicitation Module no later than 10 calendar days after solicitation issuance. * Vendors should consult the official PIEE Solicitation Module Vendor Access Instructions for account registration and access procedures at https://www.acq.osd.mil/asda/dpc/ce/cap/docs/piee/PIEE_Solicitation_Module_Vendor_Access_Instructions.pdf. * NOTE: Documents with reference to N0016726R1009 equate to N0016727R0005. Pre-Solicitation Notice ID: N00167-26-RFPREQ-CD-80-0198.