P
- Peninsular and Oriental (P&O)
- P & A Campbell
- P. Bork Shipping A/S
- P. Brown, Jr.
- P. Brown Jun. & Co.
- P. D. Marchessini & Co.
- P. F. Cleeman Shipping ApS
- P. Henderson Line (British & Burmese Steam Navigation Co., Ltd., & Burmah Steamship Co., Ltd.)
- P. Johannessen
- P. Meyer
- P. T. Nusantara Bahari
- P. T. Perusahaan Pelayaran Nusantara (Panurjwan)
- P. T. Perusahaan Pelayaran Samudera “Karana Line”
- P. T. Perusahaan Pelayaran Samudera Gesuri Lloyd
- P. T. Perusahaan Pelayaran Samudera Indonesia
- P. T. Pilindo Megah Selatan “PMS” (Pacific International Lines)
- P. T. Pupuk Sriwidjaja (PUSRI)
- Pacific Coast Steamship Company
- Pacific Far East Line
- Pacific Forum Line
- Pacific International Lines
- Pacific International Lines Ltd.
- Pacific Mail Steamship Co
- Pacific Nuclear Transport Ltd.
- Pacific Steam Navigation Co.
- Pacific Tug Pty. Ltd
- Naviera Pacífico C.ª
- Padmos Machinefabriek
- Pakistan National Shipping Corp.
- Pal Line (Paltrans) A/B
- Murphy (S) Palgrave Ltd. (Holland Ireland Line)
- Palm Line
- The Palmer Fleet
- Pal Line (Paltrans) A/B
- Pan American Petroleum & Transport Co
- Pan-Atlantic Steamship Corporation
- Pan-Islamic Steamship Co., Ltd.
- Pan Ocean Bulk Carriers Ltd
- Pan Ore Steamship Co
- Panagiotis A. Lemos Associates Ltd.
- Panalpina
- Panama Railroad Steamship Co
- P. T. Perusahaan Pelayaran Nusantara (Panurjwan)
- A. G. Papadakis
- A. G. Pappadakis & Co., Ltd.
- Papuan Liner Services Pty. Ltd.
- Paquet
- Paraense de Navegação a Vapor, Companhia
- Companhia Paraense de Navegação a Vapor
- Pastré Frères
- N. M. Paterson & Sons
- Patriarch SS Co
- Paulins Rederier
- Paulista de Comércio Marítimo, Companhia
- Peder Lindoe
- Peder Smedvig A/S
- Pegasus Ocean Services, Ltd.
- Pehrson & Wessel A/S
- Peninsular and Oriental (P&O)
- Peninsular & Occidental Steamship Co
- Peninsular Shipping Co., Ltd.
- Penn Shipping Company
- R. H. Penney & Sons
- Per Henriksen (Mercandia Shipping)
- Oxelösunds Rederi AB (Percy Slam)
- Pérez y Cía
- Perl Shipping
- Permanente Steamship Corp
- Pernambuco Powder Factory
- Compañía Peruana de Vapores S. A.
- Pesca Norte do Brasil, Companhia de
- Companhia de Pesca Norte do Brasil
- Pessos & Cia.
- Peter Callen & Sons Ltd.
- Peter Döhle Schiffahrts KG
- Peter Heering
- Peter Madsen Rederi AS
- A. N Petersen A/S
- Petrobras
- Société Pétrole-Transports
- Petros M. Nomikos
- Petter Olsen
- Petter Y. Berg
- H. H. Pettersen
- Phijffer
- Philadelphia & Reading Transportation Line
- Philadelphia & Southern Mail Steamship Co
- Philadelphia Transatlantic Line (Charles M. Taylor’s Sons)
- Philippine Ace Lines Inc.
- Philippine President Lines, Inc.
- Philippines, Micronesia and Orient Navigation Company
- Phillips Petroleum Co
- Phocean Ship Agency Ltd.
- Pickands Mather Steamship Co
- Pickford & Black
- Pierson Steamships
- Pierson Steamships / Soo River Co.
- Soo River Co. (Pierson)
- Piet Smit Sleepdienst
- Pike Ward Ltd.
- Pilbara Harbour Services Pty. Ltd.
- P. T. Pilindo Megah Selatan “PMS” (Pacific International Lines)
- David José de Pinho, Filhos, Lda. (Pinhos)
- Naviera Pinillos
- Полярный научно-исследовательский институт морского рыбного хозяйства и океанографии им. Н. М. Книповича | Polârnyĭ nauĉno-issledovatelhskiĭ institut morskogo rybnogo qozâĭstva i okeanografii im. N. M. Knipoviĉa (PINRO)
- Pioneer Line of Australia Packets
- Pittsburgh Steamship Company
- Pneumaticos Rhetymnis
- PNG Express
- Pocahontas Steamship Company
- Pohl Schiffahrtsgesellschaft
- Полярный научно-исследовательский институт морского рыбного хозяйства и океанографии им. Н. М. Книповича | Polârnyĭ nauĉno-issledovatelhskiĭ institut morskogo rybnogo qozâĭstva i okeanografii im. N. M. Knipoviĉa
- Polarus Steamship Company
- Polish American Navigation Co.
- Pollard Steamship Co.
- Pollok, Gilmore & Co.
- Polshipping houseflag
- Polska Żegluga Baltycka
- Polska Zegluga Morska - Polish Steamship Company
- Polski Linie Oceaniczne - Polish Ocean Lines.
- Poncion Rodrigues & Cia.
- Pope and Talbot Steamship Co.
- Port Jackson & Manly Steamship Co. Ltd.
- Port Line Ltd.
- Portland & Asiatic Steamship Co.
- Portland Line (Maine Steamship Co.)
- Portline - Transportes Marítimos Internacionais, S.A.
- Porto Rico Line (New York & Porto Rico SS Co)
- Portosalvo Ltd.
- Portulloyd, Scaniberia Line
- Poseidon Chartering
- Poseidon Schiffahrt GmbH
- Postel & Fils
- Postoils
- Poul Christensen Shipping A/S
- J. Poulsen Shipping A/B
- Powergen plc.
- Prekookeanska plovidba
- Premuda
- Prentout-Leblond, Leroux & Cie
- Primlaks, Rotterdam
- Prince Line
- Prince Rupert Fishermans Co-op Association
- Princess Cruises Ltd.
- Société Provençale de Remorquage Progemar
- Project Asia Services B.V.
- Prompt Shipping Corp., Ltd.
- Société Provençale d'Affrêtement et d'Armement
- Provmar Fuels Inc.
- Prudential Steamship Corp.
- Puerto Rico Towing & Barge Co.
- Puget Sound Freight Line Inc.
- Puget Sound Navigation Co.
- Pure Oil Co.
- Purvis Marine Ltd
- Purvis Shipping Co., Ltd.
- P. T. Pupuk Sriwidjaja (PUSRI)
- Putford Enterprises Ltd.
- Pyman Bros., Ltd
Anything below
this line was not added by the editor of this page.