Vi har så langt registrert 4 509 verft
| Navn | | Jan F. Meursing Werft, Amsterdam, Holland |
| Jan Schouten, Dordrecht, Holland |
| Jansens Værft, Tønsberg |
| Janssen & Schmilinsky AG, Hamburg |
| Jan van Duijvendijk, Lekkerkerk, Holland |
| Jardine Brothers, Kingston, New Brunswick, Canada |
| Jardine, Richibucto, New Brunswick, Canada |
| Jarlsø Verft, Tønsberg |
| Jas. Desmond, Miramichi, New Brunswick, Canada |
| Jas. Mosher, Newport, Avondale, Nova Scotia, Canada |
| Jas. Oliver, Quebec, Canada |
| J.A. Strandberg, Sundsvall, Sverige |
| Jas Willis, Miramichi, Nova Scotia, Canada |
| J. & A. van der Schuyt, Papendrecht, Holland |
| J.A. Westervelt, New York, USA |
| J. Bagn, Thorskog, Sverige |
| J. Bang, Grimstad |
| J. B. Balley, Shoreham, UK |
| J. Bingay, St. Mary Bay, Nova Scotia, Canada |
| J.B. North, Hantsport, Horton, Nova Scotia, Canada |
| J.B. North, Horton, Nova Scotia, Canada |
| J. Bodewees Scheepsbouw, Hoogezand, Nederland |
| J. Boel & Zonen, Temse, Belgia |
| J. Bonnesen, Malmø |
| J. Brandi, Dybvaag |
