| Carrier Code | Carrier Name |
| PLOU | POLYOL CHEMICALS PYT LTD |
| PLQS | PLIMSOLL SHIPPING INC |
| PLQT | PLAQUEMINE TOWING CO |
| PLRU | PIC LEASING CORPORATION |
| PLSP | POLISH STEAMSHIP COMPANY LTD (NISSIN CORPORATION) |
| PLUD | PORT LAUDANIA INC |
| PLUO | PLUTO TANKERS INC |
| PMAG | PRIME MARITIME AGENCY INC |
| PMCU | PACIFIC MEXICO CONTAINER LINES INC |
| PMLN | PACIFIC MICRONESIAN LINES |
| PMOL | P M & O LINES |
| PMOU | PHILIPPINES, MICRONESIA AND ORIENT NAVIGATION CO |
| PMSU | PENN-MARYLAND STEAMSHIP CORP |
| PMUD | PREMUDA CHARTERING LTD |
| PNAI | PAN AMERICAN INDEPENDENT LINE |
