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MIL-PRF-89049/13, PERFORMANCE SPECIFICATION SHEET: TACTICAL OCEAN DATA LEVEL 3 (TOD3) (15 DEC 2005)., This specification sheet defines the content and format for the U.S. National Geospatial-Intelligence Agency (NGA) Tactical Ocean Data Level 3 (TOD3) product. References to the TOD3 specification in this document assume use of both the general specification (MIL-PRF-89049A, dated 15 December 2005) and this specification sheet. The TOD3 is a vector-based digital product that portrays seafloor configuration, particularly in shallow water areas between 20 meters and 200 meters along with Non-submarine contacts data in a format suitable for computerized subsurface navigation. TOD3 is designed to be used in conjunction with the Digital Nautical Chart (DNC) and Tactical Ocean Data Level 1 and/or Level 2 for complete navigation information. The TOD3 also functions as a general-purpose database designed to support Geographic Information System (GIS) applications. This specification sheet provides a description of the content, accuracy, data format, and design of the TOD3 database. In addition, the TOD3 product portrays strategic information to support naval operations.