| C | (Caviare) (USA) | (Cleopatra's Barge II) (USA) |
| (C668) (GB) | CB-22 (Italy) | (Clipper) (USA) |
| C. A. Thayer (USA) | CCB-18 ((USA) | (Clyde A. Phillips) (USA) |
| (C. Jennet) (Germany) | Cedar (GB) | (Clyde B. Holmes) (USA) |
| C. L. S. No. 2 (Australia) | Centaur (GB) | Clymene (France) |
| C. L. S. No. 4 (Australia) | Cephee (Belgium) | CMB 4 (GB) |
| Cabby (GB) | Cerberus (Australia) | CMB 103 (GB) |
| Cable Restorer (S. Africa) | Cerberus (Germany) | Cobia (USA) |
| Cabot (USA) | Cervia (GB) | Cod (USA) |
| (Califf) (Norway) | CG 44300 (USA) | (Codeco) (Australia) |
| Caiques of Sultan Abulmejit I (Turkey) | CG 52302 (USA) | Cogge of Bremen (Germany) |
| (Cairnrock) (GB) | (CG 96002) (USA) | Col. D. D. Gaillard (USA) |
| Cairo (USA) | (Chaihuin) (Ecuador) | (Col. James M. Schoonmaker) (USA) |
| (Cala San Vincenc) (Spain) | Challenge (GB) | Colbert (France) |
| (Cala Virgili) (France) | (Challenger) (Australia) | (Colbert) (Poland) |
| Calcite (USA) | Charles Cooper (Falkland Islands) | Colin Archer (Norway) |
| Calderon (Ecuador) | Charles W. Morgan (USA) | Colonel (Australia) |
| (California) (USA) | (Charles S. Sperry) (Chile) | Columbia (USA) (USA) |
| Calshot (GB) | Charlotte (Germany) | (Columbia I) (Austria) |
| Calshot Spit (GB) | (Chateaugay) (USA) | Comanche (USA) |
| Calypso (France) (Canada) | Chattahoochee (USA) | Comet (Canada) |
| Cambria (GB) | Chauncey Maples (Malawi) | (Commandant Louis Richard) (Italy) |
| Camilla (Germany) | Chesapeake (USA) | Commander (USA) |
| Canadian Princess (Canada) | Cheynes II (Australia) | Compton Castle (GB) |
| Canal Tug (France) | Cheynes IV (Australia) | Comrade (GB) |
| Cangarda (USA) | Chickama II (Canada) | Concordia (Italy) |
| Canning (GB) | Chief Uncas (USA) | Concrete Barge (GB) |
| Canopus (USA) | Chiltern (GB) | Concrete Canal Boat (GB) |
| Canot Imperial (France) | China (USA) | Constable (GB) |
| (Canterbury) (New Zealand) | Chipchase (GB) | (Constance B) (Canada) |
| Cap Lizard (France) | (Chiryu Maru) (Japan) | Constellation (USA) |
| Cap San Diego (Germany) | (Chr. Husted) (Denmark) | Constitution (USA) |
| (Cape Charles) (USA) | (Chr. Jensen) (Denmark) | Conte Biancamano (Italy) |
| Cape North (Canada) | Christeen (USA) | Convoy (GB) |
| Cape Sable (Canada) | Christiaan Brunings (Netherlands) | Cora F. Cressy (USA) |
| Capella (Germany) | Christian Radich (Norway) | Cordoba (Colombia) |
| Capricorn (Falkland Islands) | Christiania (Norway) | (Corneille) (USA) |
| (Captain Canfield) (USA) | Christina (Finland) | (Cornfield Point) (USA) |
| (Captain James Cook) (USA) | (Christina) (Germany) | Coronet (USA) |
| Captain Meriwether Lewis (USA) | (Christophoros) (USA) | (Cotopaxi) (Ecuador) |
| (Car Nikola II ) (Yugoslavia) | Chrysanthemum (GB) | (County of Peebles) (Chile) |
| (Carene) (Denmark) | (Chucuito) (Peru) | County of Roxburgh (Tuamotu Islands) |
| Carene Star (Denmark) | (Cincinnati) (USA) | Coya (Peru) |
| Cariad (GB) | City of Adelaide (Australia) (GB) | Creole (GB) |
| (Carlpace) (Dominican Republic) | City of Beaumont (US) | Creoula (Portugal) |
| Carmellan (Germany) | City of Clinton (USA) | (Cresset) (Canada) |
| (Carmen Flores) (Spain) | City of Detroit III (USA) | (Cressy) (GB) |
| Carola (GB) | City of Edinboro (GB) | Croaker (USA) |
| Caroline (GB) | (City of Edinburgh) (GB) | (Croatia) (Romania) |
| (Carolus) (Finland) | City of Kransburg (USA) | Crossen (Germany) |
| (Carrick) (GB) | City of Milwaukee (USA) | (Cross Rip) (USA) |
| Cartagena (Colombia) | City of Norfolk (USA) | Cuddington (GB) |
| Cassin Young (USA) | Clamagore (USA) | Cutty Sark (GB) |
| Castlemaine (Australia) | (Clan Macleod) (Australia) | (Cuxhaven) (Germany) |
| Catalina (Mexico) | (Clarastella) (GB) | (CV-707) (Finland) |
| Catarina (Germany) | Clarence Crockett (USA) | Cygnet (GB) |
| Catawissa (USA) | Claus D (Germany) | Cythera (USA) |
| Cavalier (GB) | Claus Sorensen (Denmark) | |
| Cavalla (USA) | Clearway (GB) |
