We have so far registered 4,539 shipyards
| Name | | Manitowoc Shipbuilding Corp., Manitowoc, Wisconsin, U.S.A |
| Manul Pires Guerrero, Setubal |
| Marine Industries Ltd., Sorel, QE. Canada |
| Marinens Hovedverft, Horten, Norge |
| Marine Project Ltd Spoo, Gdansk |
| Marinewerft, Wilhelmshaven, Tyskland |
| Marinship Corporation, Sausalito, CA, USA |
| Marin Ship Corp., Sausalito, California |
| Marinvarvet/Valdemarksvik Båtbyggeri A/B, Sverige |
| Maritime Partner A/S, Ålesund |
| Maritime Shipyard Sp.z.o.o, Gdansk |
| Maritim Ltd., Gdansk |
| Maritim S.Y.Sp.z.oo.,Gdansk |
| Marmara Tersanesi, Yarimca |
| Marshall, Hillsboro, Nova Scotia |
| Marshall Yard, North Shields, England |
| Marstal |
| Marstrandverken AB, Marstrand, Sverige |
| Marstrandverken, Uddevalla |
| Martens, Olsen & Co, Bergen |
| Martin Brekne, Borshavn, Lista, Farsund |
| Martin Brekne & Lars Jacobsen, Lista, Farsund |
| Martin Eldrup, Tvedestrand |
| Martin Jansen Schiffswerft, Leer, Tyskland |
| Martinolich Shipbuilding Co. Docton, WA. USA |
