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| Navn | | Apatin Shipyard, Apatin |
| A. P. Botter, Hammelwarden, Tyskland |
| Apenrade |
| A.P. Petersen, Thurø, Danmark |
| Appledore shipb. Ltd. Appledore |
| Appledore Shipbuilders Ltd., Appledore, UK |
| A. Putnam, Selmah, Maithland, Nova Scotia, Canada |
| A. R. Andersen, Arendal |
| Arctic Boat A/S, Gausvik. |
| Ardrossan Dry Dock & Shipbuilding Co., Ardrossan, Skotland, UK |
| Ardrossan S.B.Co., Ardrossan |
| Arendal |
| Arendal Mek. Verksted |
| Argibay Shipyard, Alverca, Portugal |
| Argos Engineering Pte. Ltd. Singapore |
| Arkhangelsk, Russland |
| Arlesen, Brevik |
| Arlington, NY, USA |
| Armand Imbeau, Tadoussac, Quebec |
| Armstrong, Mitchell & Co Ltd., Newcastle. |
| Armstrong, Newcastle, UK |
| Armstrong, Whitworth & Co. Ltd, Newcastle, UK |
| Arnevig Verft / Elling Jonsen |
| Arnevik Verft / John Ellingsen |
| Arnhemsche Scheepsbouw Mij. Nav., Arnhem |
