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EXHIBIT 6.1


Grupo TMM and Subsidiaries


Computation of Earnings per Share (IFRS &
U.S. GAAP)


|                                                |  |                                    |            |   |      |  |            |      |  |  |            |   |  |      |            |   |  |  |            |  
|----------------------------------------------- |  | ---------------------------------- | ---------- | - | ---- |  | ---------- | ---- |  |  | ---------- | - |  | ---- | ---------- | - |  |  | ---------- | -
|                                                |  | December 31,                       |           
|                                                |  |                                    |           
|                                                |  | 2004                               |            |   | 2003 |  |            | 2002 |  |  | 2001       |   |  | 2000 |           
|                                                |  |                                    |            |   |      |  |            |      |  |  |            |   |  |      |           
|                                                |  | ($ in thousands except share data) |           
|Shares at the end of period                     |  |                                    | 56,963,137 |   |      |  | 56,963,137 |      |  |  | 56,963,137 |   |  |      | 56,963,137 |   |  |  | 17,441,590 |  
|Yearly weighted average shares                  |  |                                    | 56,963,137 |   |      |  | 56,963,137 |      |  |  | 56,963,137 |   |  |      | 18,693,635 |   |  |  | 17,441,590 |  
|IFRS:                                           |  |                                    |            |   |      |  |            |      |  |  |            |   |  |      |            |   |  |  |            |  
|Net loss from continuing operations             |  |                                    | (112,017   | ) |      |  | (128,593   | )    |  |  | (47,589    | ) |  |      | (69,034    | ) |  |  | (21,404    | )
|Net income from discontinued operations         |  |                                    | 9,470      |   |      |  | 41,931     |      |  |  | 4,980      |   |  |      | 77,959     |   |  |  | 23,134     |  
|Net (loss) income                               |  |                                    | (102,547   | ) |      |  | (86,662    | )    |  |  | (42,609    | ) |  |      | 8,925      |   |  |  | 1,730      |  
|Loss per share from continuing operations       |  |                                    | (1.966     | ) |      |  | (2.257     | )    |  |  | (0.835     | ) |  |      | (3.691     | ) |  |  | (1.227     | )
|Earnings per share from discontinued operations |  |                                    | 0.166      |   |      |  | 0.736      |      |  |  | 0.087      |   |  |      | 4.168      |   |  |  | 1.324      |  
|(Loss) earnings per share                       |  |                                    | (1.800     | ) |      |  | (1.521     | )    |  |  | (0.748     | ) |  |      | 0.477      |   |  |  | 0.097      |  
|U.S.GAAP:                                       |  |                                    |            |   |      |  |            |      |  |  |            |   |  |      |            |   |  |  |            |  
|Net loss from continuing operations             |  |                                    | (114,232   | ) |      |  | (153,730   | )    |  |  | (57,759    | ) |  |      | (42,471    | ) |  |  | (11,865    | )
|Net income from discontinued operations         |  |                                    | 1,561      |   |      |  | 106,660    |      |  |  | 68,407     |   |  |      | 60,307     |   |  |  | 15,688     |  
|Net loss from extraordinary item  Net          |  |                                    |            |   |      |  |            |      |  |  |            |   |  |      |            |   |  |  | (5,075     | )
|Net (loss) income                               |  |                                    | (115,793   | ) |      |  | (47,070    | )    |  |  | 10,648     |   |  |      | 17,836     |   |  |  | (1,252     | )
|Loss per share from continuing operations       |  |                                    | (2,005     | ) |      |  | (2.698     | )    |  |  | (1.014     | ) |  |      | (2.271     | ) |  |  | (0.680     | )
|Earnings per share from discontinued operations |  |                                    | 0.027      |   |      |  | 1.872      |      |  |  | 1.201      |   |  |      | 3.225      |   |  |  | 0.896      |  
|Loss per share from extraordinary item  Net    |  |                                    |            |   |      |  |            |      |  |  |            |   |  |      |            |   |  |  | (0.291     | )
|(Loss) earnings per share                       |  |                                    | (2.032     | ) |      |  | (0.826     | )    |  |  | 0.187      |   |  |      | 0.954      |   |  |  | (0.075     | )