Categories of the ships in USN responses to four HADR events
| Hull classification or mission code | Platform type | 2004 Indian Ocean Tsunami | 2005 Hurricane Katrina | 2010 Haiti Earthquake | 2011 Japan Earthquake/Tsunami |
|---|---|---|---|---|---|
| CVN | Nuclear Carrier | 1 | 2 | 1 | 0 |
| LHA/LHD | Amphibious | 2 | 2 | 3 | 6 |
| CG/DDG | CRUDES | 6 | 0 | 4 | 11 |
| LPD/LSD | Landing Platform Dock | 3 | 3 | 5 | 15 |
| MCM/MHC | Minesweeper | 0 | 9 | 0 | 0 |
| SSN | Submarine | 2 | 0 | 0 | 0 |
| PM-3 | TAK, TAK-E, LMSR | 14 | 17 | 17 | 15 |
| PM-4 | T-AH | 1 | 1 | 1 | 0 |
| PM-8 | EFP, HSV | 1 |
| Hull classification or mission code | Platform type | 2004 Indian Ocean Tsunami | 2005 Hurricane Katrina | 2010 Haiti Earthquake | 2011 Japan Earthquake/Tsunami |
|---|---|---|---|---|---|
| CVN | Nuclear Carrier | 1 | 2 | 1 | 0 |
| LHA/LHD | Amphibious | 2 | 2 | 3 | 6 |
| CG/DDG | CRUDES | 6 | 0 | 4 | 11 |
| LPD/LSD | Landing Platform Dock | 3 | 3 | 5 | 15 |
| MCM/MHC | Minesweeper | 0 | 9 | 0 | 0 |
| SSN | Submarine | 2 | 0 | 0 | 0 |
| PM-3 | TAK, TAK-E, LMSR | 14 | 17 | 17 | 15 |
| PM-4 | T-AH | 1 | 1 | 1 | 0 |
| PM-8 | EFP, HSV | 1 |
Sources: Greenfield and Ingram (2011) and Kaczur et al. (2012)
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