We have so far registered 4,561 shipyards
| Name | | Poulsen & Jensen, Bregvinge, Svendborg, Danmark |
| P.Ph. Stuhrs Maskin & Skipsbyggeri, Aalborg, Danmark |
| P. & P. Stack, Williamsburg, USA |
| P. R. Crichton, Kingsport, Nova Scotia, Canada |
| President Marine Ltd., Singapore |
| Preston Iron Shipbuilding Co., Preston, England |
| Preussen, Tyskland |
| Primrose, Pictou, Nova Scotia, Canada |
| Prince Edvard Island, Canada |
| Prince Edward Island, Canada |
| Prince Rupert Dry Dock & Shipyard, Prince Rupert, British Columbia, Canada |
| Promek Boats A/S, Smøla |
| P. Sager, Bremen, Tyskland |
| P. Sager, Vegesack, Tyskland |
| P.S. Blehr, Brevik |
| P. Smit, jun, Slikkerveer, Nederland |
| P. Svendsen, Gilhus, Drammen |
| P. Sønnichsen & Michelsen, Sønderbo, Danmark |
| P. Thorsen, Kragerø |
| PT Nanindah Mutiara S.Y, Batam |
| PTS Ltd., Gdansk |
| PTS Sp.zoo, Stettin |
| Puget Sound Bridge & Dredging Corp., Seattle, Washington, USA |
| Pugwash, Nova Scotia, Canada |
| Pullman Standard Car Mfg. Co., Chicago, IL, USA |
