We have so far registered 19,632 shipping companies
| Name | Founded | | C. M. Nielsen, Tvedestrand | |
| C. Moestue, Frederikshald / Halden | |
| C. M. Olsen, Halden | |
| C. Mortensen & O. J. Ommundsen, Aakerøy, Lillesand | |
| C. & M. Svendsen; Kristiania/Drammen | |
| C. M. Tollisen, Farsund | |
| C. Møller, Arendal | |
| C. Møller & L. Hansen, Fredrikshald | |
| C. N. Brinck, Kristiania | |
| C. N. Christensen, Tønsberg | |
| C. N. Fæster, Bergen | |
| C. N. Hammer, Arendal | |
| C. Nielsen Braatø, Kragerø | |
| C. Nielsen, Tønsberg | |
| C. Nieuwpoort | |
| C. N. Nielsen, Brevik | |
| C. Norem, Kristiania | |
| C. Næss, Kragerø | |
| Coast Line A/S, Stavanger | |
| Cob Line International A/S, Drammen | |
| Cock,O.& S.og I.Nielsen,Langesund | |
| Cog Offshore A/S, Karmsund | |
| C. O. Groth, Kristiansand | |
| C. O. Haslund, Arendal | |
| Colbensen,Finkel, Spind | |
