| Carrier Code | Carrier Name |
| POCL | P&O NEDLLOYD |
| POCU | P & O CONTAINERS LTD |
| PODO | PORT ARTHUR TOWING CO |
| POLG | POLING TRANSPORTATION CORP |
| POLU | POLISH OCEAN LINES GYDNIA AMERICAN LINES |
| PONT | PONTIAN SHIPPING COMPANY LIMITED |
| POUA | PORT OF UMATILLA |
| PPGU | PPG INDUSTRIES INC |
| PPIU | PPI LINES LTD |
| PPPK | PUERTO RICO PACKERS INC |
| PQCL | PRINCIPAL CONTAINER LINE-FAR FREIGHT SERVICES INC |
| PREN | PRIMROSE ENTERPRISES S A |
| PREU | PRIME INC |
| PRHG | PIONEER SHIPPING INC |
| PRKP | PARK PACIFIC COMPANY C/O JORGEN JAHRE SHIPPING |
