We have so far registered 4,561 shipyards
| Name | | P. M. Petersen, Porsgrund |
| Polson Iron Works Co. Ltd., Toronto, Canada |
| Poltramp Yard Sp.z.oo., Polen |
| Poole & Steel , Port Adelaide, Australia |
| Porsgrund Mek. Verksted. Porsgrunn |
| Porsgrund Skibsbyggeri A/S, Porsgrunn |
| Porsgrunds S.B. Selsk. Moehaugen, Solum, Porsgrunn / Skien |
| Porsgrunds Skibsbygningselskab, Porsgrunn |
| Porsgrunn |
| Porsgrunn / Langesund |
| Porsgrunn S. B. Selsk. (Lars B. Grotnes) |
| Porta Odra Sp.z.oo, Stettin |
| Port Arthur S.B. Co., Port Arthur. Ontario, Ontario, Canada |
| Port Brulez. Nova Scotia, Canada |
| Port Glasgow, Scotland |
| Port Hedland, Western Australia |
| Porthleven, UK |
| Portland, Maine, USA |
| Portland S.B. Co., Troon, Scotland |
| Portsmouth |
| Portsmouth, Me. USA |
| Portsmouth, New Hamphsire, USA |
| P.O. SevMash. Predpriyatiye, Severodvinsk |
| Pottemakerstranden, Stavanger |
| Potts & Son, St.John, New Brunswick, Canada |
