EXHIBIT 21

SUBSIDIARY CORPORATIONS OF CUBIC CORPORATION  PLACE OF INCORPORATION AND PERCENTAGE OWNED

|Subsidiary                                                                                                                                                                                                     |  | Place of
Incorporation         |  | Percentage
Owned |   
|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |  | ------------------------------ |  | ---------------- | --
|ADT GLOBAL SERVICES, INC.San Diego, California                                                                                                                                                                 |  | Delaware                       |  | 100              | % 
|APPLIED DATA TECHNOLOGY, INC.San Diego, California                                                                                                                                                             |  | California                     |  | 100              | % 
|CONSOLIDATED CONVERTING CO.Whittier, California                                                                                                                                                                |  | California                     |  | 100              | % 
|CUBIC APPLICATIONS, INC.Lacey, Washington                                                                                                                                                                      |  | California                     |  | 100              | % 
|CUBIC COMMUNICATIONS, INC.San Diego, California                                                                                                                                                                |  | California                     |  | 100              | % 
|CUBIC DATA SYSTEMS, INC.San Diego, California                                                                                                                                                                  |  | California                     |  | 90               | % 
|CUBIC DEFENSE SYSTEMS, INC.San Diego, California                                                                                                                                                               |  | California                     |  | 100              | % 
|CUBIC FOREIGN SALES, INC.San Diego, California                                                                                                                                                                 |  | St. Thomas
U.S. Virgin Islands |  | 100              | % 
|CUBIC LAND, INC.San Diego, California                                                                                                                                                                          |  | California                     |  | 100              | % 
|CUBIC MICROCHIP DEVELOPMENT CORPORATIONSan Diego, California                                                                                                                                                   |  | California                     |  | 100              | % 
|CUBIC TRANSPORTATION SYSTEMS, INC.San Diego, California                                                                                                                                                        |  | California                     |  | 100              | % 
|CUBIC TRANSPORTATION SYSTEMS FAR EAST LIMITEDHong Kong, China                                                                                                                                                  |  | Hong Kong                      |  | 100              | % 
|CUBIC TRANSPORTATION SYSTEMS LIMITEDLondon, England
*        (100% owned subsidiary of Cubic (UK) Limited)                                                                                                     |  | England                        |  | 100              | %*
|CUBIC TRANSPORTATION SYSTEMS (AUSTRALIA) PTY LIMITEDNew South Wales, Australia
*        (50% owned subsidiary of Cubic Corporation and
            50% owned subsidiary of Cubic Transportation Systems, Inc.) |  | Australia                      |  | 100              | %*
|CUBIC (UK) LIMITEDLondon, England                                                                                                                                                                              |  | England                        |  | 100              | % 
|CUBIC WORLDWIDE TECHNICAL SERVICES, INC.San Diego, California                                                                                                                                                  |  | Delaware                       |  | 100              | % 
|NAVSAT CORPORATIONSan Diego, California                                                                                                                                                                        |  | California                     |  | 100              | % 
|OSCMAR INTERNATIONAL LIMITEDAuckland, New Zealand                                                                                                                                                              |  | New Zealand                    |  | 100              | % 

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