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| S No | Unit | By 1986 | By 2013(july) |
| 1 | PORT BLAIR | 38 | 82 |
| 2 | FERRARGUNJ | 11 | 30 |
| 3 | BARATANG | - | 12 |
| 4 | RANGAT | 12 | 26 |
| 5 | MAYABUNDER | 10 | 22 |
| 6 | DIGLIPUR | 11 | 30 |
| 7 | NEIL ISLAND | - | 04 |
| 8 | HAVELOCK ISLAND | - | 06 |
| 9 | HUTBAY | 02 | 17 |
| 10 | CAR NICOBAR | 03 | 12 |
| 11 | KATCHAL | - | 03 |
| 12 | KAMORTA | - | 04 |
| 13 | TERESSA | - | 02 |
| 14 | CAMPBELLY BAY | 03 | 14 |
| 15 | TOTAL | 90 | 264 |