The Naval Surface Warfare Center Philadelphia Division intends to award a single Submarine Safety (SUBSAFE) Multiple Award Contract (MAC) as an Indefinite-Delivery-Indefinite-Quantity (IDIQ) contract. The contract will support technical services, management, materials, tools, equipment, and facilities for work on main and auxiliary, weapons, hull, mechanical, and electrical systems aboard U.S. Naval Submarines. Work will encompass repair, maintenance, removal/installation, troubleshooting, modernization, and testing for SUBSAFE, Level I Material, and Non-SUBSAFE requirements. An RFP is forthcoming. No budget or specific performance location is specified in this description.