| Cachto | YT 215 | YTB 215 | Decom 1957, Stricken 1959 | |
| Cahokia | YT 135 | YTB 135 | Decom 1947 | |
| Camelia | Civil War | Unknown | ||
| Campti | YTB 816 | Stricken 2000 / Sold to Hartley Marine Service, Renamed Seguin | ||
| Canarsee | YTB 703 | YTM 703 | Stricken 1975, Sold | |
| Canasatego | YNT 6 | YTM 732 | To Maritime Commision 1947, Sold | |
| Candoto | YT 377 | YTB 377 | Non Comm status, WW II | |
| Canocan | YT 290 | YTB 290 | Non Comm status, WW II / Re-Named Sea King | |
| Canonchet | YTB 823 | Active in Bremerton, WA. | ||
| Canonicus | YT 187 | YTM 187 | To Maritime Commision 1947, Sold | |
| Canuck | YT 397 | YTB 397 | YTM 397 | Decom 1946, Stricken 1986 |
| Carascan | YTB 511 | YTM 774 | Stricken 1972, Sold | |
| Caspian | WW1 | Returned to Owner 1919 | ||
| Carl R. Gray | WW 1 | YT 35 | Nausett | Stricken 1933 |
| Carnation | Civil War | Unknown | ||
| Catahecassa | YTB 828 | Active inBremerton, WA. | ||
| Catalpa | Civil War | Unknown | ||
| Catawba | YT 32 | YTM 32 | Ex Howard Green / Stricken 1946 / Sold | |
| Cayuga | WW 1 | YT 12 | Ex Powhattan / Stricken 1928 / Sold | |
| Chahao | YTB 496 | YTM 496 | Stricken 1981 / Sunk as a target 7/4/96 | |
| Challenge | WW 1 | AT 26 | Unknown | |
| Chanagi | YT 380 | YTB 380 | YTM 380 | Decom 1946, Stricken 1986 |
| Charles T. Gallagher | WW1 | Returned to Owner 1919 | ||
| Charles Mann | WW 1 | Unknown | ||
| Charles P. Crawford | WW 1 | Returned to Owner 1919 | ||
| Charles P. Kuper | WW 1 | Returned to Owner 1919 | ||
| Chase S. Osborn | WW 1 | YT 41 | Decommissioned 1920 / Stricken 1921 | |
| Chaska | YT 226 | YTB 226 | Stricken 1956 | |
| Chegodoega | YTB 542 | YTM 542 | Decom 1946, Stricken 1985 / Scrapped 3/3/87 | |
| Chekilli | YT 175 | YTB 175 | YTM 175 | Stricken 1973, Sold 1974 |
| Chemung | WW1 | AT 18 | Ex Pocahontas, Ex Louie II | |
| Chenung | WW 1 | AT 18 | Unknown | |
| Chepanoc | YT 381 | YTB 381 | YTM 381 | Decom 1946, Stricken 1986 / Scrapped 5/5/87 |
| Cheraw | YTB 802 | Stricken 1996 to Army Corps of Engineers, Cleveland | ||
| Cherokee | WW 1 | Ex Luckenbach No. 2 / Lost Feb. 24, 1918 | ||
| Chesaning | YTB 769 | Sold to McAllister Towing of Virginia 2006 | ||
| Chetek | YTB 827 | Stricken 1996 to Army Corps of Engineers, Cleveland | ||
| Chicomico | YT 378 | YTB 378 | Sticken 1947 | |
| Chickasaw | WW 1 | Sold / Sunk as reef off Panama City FL. | ||
| Chilkat | YTB 510 | YTM 773 | Stricken 1977 | |
| Chipola | YT 466 | YTM 466 | WSA | Unknown |
| Chiquito | YTB 499 | YTM 765 | Stricken 1975, Sold | |
| Choctaw | WW 1 | Wicomico | YT 26 | Lost Feb. 15, 1940, Virginia |
| Chohonaga | YTB 500 | YTM 766 | Served in non-com status, Stricken1975, Sold | |
| Cholocco | YTB 498 | YTM 464 | YTM 764 | To WSA 1946.Stricken 1975 / Returned to Owner Renamed Robert Henjes |
| Clematis | Civil War | Unknown | ||
| Clinton | Civil War | Unknown | ||
| Chipola | YT 466 | YTB 466 | To WSA 1946 | |
| Chiquito | YTB 499 | YTM 765 | Stricken 1975, Sold | |
| Choptank | WW 1 | YT 36 | YTM 36 | Stricken 1946, To WSA 1947 |
| Christine | WW 1 | YT 106 | YFB 13 | Stricken 1935 |
| Clover | Civil War | Unknown | ||
| Coatopa | YT 382 | YTB 382 | YTM 382 | Served in non-com status, Decom 1946, Stricken 1986 |
| Cochali | YT 383 | YTM 383 | YTM 383 | Served in non-com status, Decom 1947, Stricken 1974 / Scrapped 4/28/87 |
| Cochise | YT 216 | YTB 216 | Served in non-com status | |
| Coeur De Lion | Civil War | Unknown | ||
| Cohasset | Civil War | Unknown | ||
| Cohasset | YT 389 | YTB 389 | Stricken 1960 / Sold to Remolcadores Dominicanos, S. A. / Scrapped 1989 | |
| Columbine | Civil War | Unknown | ||
| Conchardee | YT 412 | YTB 412 | YTM 412 | Served in non-com status, Stricken 1971, Sold |
| Concord | WW 1 | YT 33 | Mendota | Ex Muscoath / Decom 1934, Stricken 1934 |
| Conestoga | WW 1 | AT 54 | Unknown | |
| Connewango | YT 388 | YTB 388 | YTM 388 | Stricken 1975, Sold to Bill Hoey, owner of Gaelic Tugboat Company |
| Conohasset | YT 389 | YTB 389 | Decom 1946, Stricken 1960 | |
| Cononicus | YT 187 | YTM 187 | Ex Penn Hull 248 / Stricken to USMC 1947 / Sold | |
| Coquet | WW 1 | Unknown | ||
| Coshecton | YT 404 | YTB 404 | Decom 1946, Stricken 1985 / Reclassified to Combatant Craft 12/01/1985 | |
| Credenda | WW 1 | Stricken 1919 | ||
| Criccieth | WW 1 | Unknown | ||
| Curt | WW 1 | YT 34 | YNG 21 | To Drednaught / To YGN 21 1940 / Stricken 1944 |
| Cusseta | YT 405 | YTB 405 | YTM 405 | Stricken 1985, Sold |