MIL-PRF-89049/10, PERFORMANCE SPECIFICATION SHEET: TACTICAL OCEAN DATA LEVEL 0 (TOD0) (24 NOV 1998)., This specification sheet defines the content and format for the U.S. National Geospatial-Intelligence Agency (NGA) Tactical Ocean Data Level 0 (TOD0) product. References to the TOD0 specification in this document assume use of both the general specification (MIL-PRF-89049A, dated 15 December 2005) and this specification sheet. The TOD0 is a vector-based digital product that portrays Naval Operating Areas (OPAREAS), Ranges, and Naval Exercise Areas (NAVEX) in a format suitable for computerized navigation. TOD0 is designed to be used in conjunction with the Digital Nautical Chart (DNC) for complete navigation information. The TOD0 also functions as a general purpose global 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 TOD0 database. In addition, it portrays strategic information to support naval operations.