We have so far registered 4,561 shipyards
| Name | | J. Kitchen, River John, Nova Scotia, Canada |
| J. Koster Hzn, Sheepsbouwwerf Gideon, Groningen, Holland |
| J. & K. Smit´s scheepswerven, Kinderdijk, Nederland |
| J & K Smit´s scheepswerven, Krimpen aan de Lek, Nederland |
| J.K.Welding, Brooklyn, New York, USA |
| J.L. Aas, Ryfylke |
| J. Laing & Sons Ltd., Sunderland, UK. |
| J. Lamont & Co., Greenock, Scotland |
| J.L. Bolson & Sons Ltd. Poole, UK. |
| J. Lewis & Sons, Aberdeen, UK |
| J. Lincoln, Damariscotta, Newcastle, Maine, USA |
| J. Littlefield, Bangor, Maine, USA |
| J. Lof, Jacobstad, Finland |
| J. Lovitt, Saulnierville, Nova Scotia, Canada |
| J. Lovitt, Tynemouth, St. John, New Brunswick, Canada |
| J.L. Pye, Hopewell, New Brunswick, Canada |
| J. L. Thompson & Co. Ltd., Sunderland, UK |
| J.L. Thompson & Sons Ltd, Sunderland, UK |
| J.L. Thornycroft & Co. Ltd., Southhampton. UK |
| J. MacDonald, St. John, New Brunswick, Canada |
| J. Mahoney, St. John, New Brunswick, Canada |
| J.M'Alpine, Shelburne, Nova Scotia, Canada |
| J. McArthur & Company, Thistle Yard, Paisley, Scotland |
| J. McColl, New Glasgow, Nova Scotia, Canada |
| J. McDougall, Dundas, Prince Edward Island |
