This is a sole source requirement for the repair of four hydraulic pumps, which are Critical Safety Items. The government lacks sufficient data to contract with any source other than the current approved manufacturer. Any new source must obtain Government Source Approval prior to award, and the approval process cannot be delayed for this procurement. Offers from unapproved sources must include all data required by the NAVSUP WSS Source Approval Brochure or they will not be considered. No budget amount or performance location is specified in this notice.