This is a market research notice for the engineering, manufacturing, and lifecycle support of the TI-28 and TI-next Total Ship Monitoring System for multiple submarine classes. The proposed contract would be an 8-year, multi-type agreement spanning Fiscal Years 2028 through 2035, requiring approximately 552,000 man-hours. It includes specific annual production quantities for shipsets across those years. Respondents must demonstrate extensive technical expertise, possess adequate SECRET-level cleared facilities for development and production, and be able to field specified Key Personnel. This is for planning purposes only and is not a solicitation for proposals.