The Naval Undersea Warfare Center, Division, Keyport (NUWCDIVKPT) is conducting sources-sought market research for engineering, maintenance, alteration installation, and technical support for various systems installed on board U.S. Navy vessels, including alteration installation packages, fielding, conformance documentation, pre/post-installation testing, completion reports, and an NAVSEA-approved Alteration Installation Team quality assurance program. This is for planning purposes only, is not a request for proposal or solicitation, and no contract will be awarded from the questionnaire; responses will help determine the acquisition plan and procurement method. The contemplated contract is Cost-Plus-Fixed-Fee, full and open competition, best-value with trade-off among technical capability, past performance, and cost/price, with a base period of twelve months and up to four option years. Interested parties should respond via email to the listed NUWCDIVKPT points of contact using the questionnaire and should review the draft SOW, draft Install Schedule, and OPSEC Plan sample template, since an OPSEC Plan will be required for award under any subsequent solicitation. The selected NAICS code is 336611 (Ship Building and Repairing), the PSC is J998 (Non-Nuclear Ship Repair), no Industry Day or draft solicitation is anticipated, and the incumbent is Continental Tide Defense Systems, Inc.