Vi har så langt registrert 4 509 verft
| Navn | | John Hauge, Leirvik, Stord |
| John Hauges Verft, Haugesund |
| John Humphrey & Co., Aberdeen, Skottland |
| John & James Robinson, Sunderland |
| John Johnsen, Vikkilen, Grimstad |
| John Laird, Liverpool, UK |
| John Lewis & Sons Ltd., Aberdeen |
| John P. Pedersens verft, Staubo, Tvedestrand |
| John Priestman & Co, Sunderland, UK |
| John Ransom, Southampton |
| John Readhead & Sons., South Shields, UK |
| John Reid & Co., Port Glasgow, UK |
| John Robinson, Sunderland |
| John Scott & Co. Abden Shipyard, Kingshorn, Skottland |
| John Scott & Son, Ironfoundry and Shipyard i Inverkeithing, Skottland. |
| John shearer & Son, Elderslie, Glasgow, Skottland. |
| John Smith, Aberdeen |
| John S. Parker, Tynemouth Creek, New Brunswick, Canada |
| John Terjesen, Vigkilen, Grimstad |
| John Thornycroft & Co, Southampton, England |
| Johs. Kristensen Skibsbyggeri Aps, Hvide Sande |
| Joh. Wesmann, Åsgårdstrand |
| J.O. Johansson, Gamla Lødøse, Sverige |
| Jollet & Belin’s Yard, Nantes, Frankrike |
| J. Olmanns, Brake, Tyskland |
