| H | ||||
| H.A. Baxter | WW 1 | Unknown | ||
| Hackensack | LT 2089 | YTM 750 | Stricken 1986 Sold | |
| Haiglar | YT 327 | YTB 327 | Decom 1947, Stricken 1947 | |
| Hampton | WW 1 | Unknown | ||
| Harcourt | Civil War | Unknown | ||
| Hastwiana | YTB 512 | YTM 775 | Stricken 1975, Sold | |
| Hatak | YT 219 | YTB 219 | Decom 1957, Stricken 1957 / Sold to McAllister Towing / Renamed Jane McAllister | |
| Heliotrope | Civil War | Unknown | ||
| Henolpen | WW 1 | Unknown | ||
| Heekon | YT 141 | YTB 141 | YTM 141 | Stricken 1963 / Sold to McAllister Towing, Renamed Frances M. McAllister / Sold |
| Hercules | WW 1 | YT 13 | Decom 1931, Stricken 1936 | |
| Hiamonee | YTB 513 | YTM 776 | Decom 1946, Stricken 1986 / Renamed Invader | |
| Hiawatha | YT 264 | YTB 264 | Decom 1960, Stricken 1960 | |
| Hiawatha | WW 1 | Unknown | ||
| H. A. Baxter | WW1 | Unknown | ||
| Hampton | WW1 | Unknown | ||
| Henlopen | WW1 | Unknown | ||
| Herculus | WW1 | Unknown | ||
| Hiawatha | WW1 | Unknown | ||
| Hisada | YTB 518 | YTM 518 | Stricken 1976 / Sunk as Target 5/1/1976 | |
| Hobcaw | WW 1 | Unknown | ||
| Hoga | YT 146 | YTB 146 | YTM 146 | Decom 1947 / Donated to Arkansas Inland Maritime Museum in Arkansas. 07/28, 2005 |
| Hombro | YTB 506 | YTM 769 | Stricken to Viet Nam 1972 | |
| Honeysuckle | Civil War | Unknown | ||
| Houma | YTB 811 | Stricken 2001, Sold to Marine Tug LLC, Renamed Osprey | ||
| Howard C. Moore | WW1 | Returned to Owner 1919 | ||
| Howard Green | WW 1 | YT 32 | YTM 32 | Stricken 1946 / Sold |
| Hoyt | Civil War | Unknown | ||
| Huron | WW 1 | Arpaho | Unknown | |
| Hyacinth | Civil War | Unknown | ||
| Hyannis | YTB 817 | Stricken 1977 to the Dept of Interior, Renamed Midway Atoll | ||
| Hydrangea | Civil War | Unknown | ||
| I | ||||
| Ida | Civil War | Unknown | ||
| Inca | WW 1 | Stricken 1919 | ||
| Iona | WW1 | YT 107 | Sunk January 2, 1942 | |
| Iona | YT 220 | YTB 220 | YTM 220 | Lost June 1963, Phillipines |
| Iona | WW 1 | YT 107 | Stricken 1942, Sunk Jan 2, 1942 (Cavite) | |
| Iosco | WW 1 | Tatnuck | Unknown | |
| Iris | Civil War | Unknown | ||
| Iroquois | WW 1 | AT 46 | Ex Fearless | |
| Island Belle | Civil War | Unknown | ||
| Itara | YT 391 | YTB 391 | YTM 391 | Stricken 1982 / Sold to Michael Zapetis Tugs Renamed Eagle |
| Iuka | YTB 819 | Stricken 1996 | ||
| Ivy | Civil War | Unknown | ||
| Iwana | YT 272 | YTB 272 | YTM 272 | Stricken 1974, Sold |
| Iwana | WW 1 | YT 2 | YTM 2 | To War shipping Admin 1946 |
| J | ||||
| J. Alvan Clark | WW 1 | Unknown | ||
| Jack Scully | WW1 | Unknown | ||
| James H. Clark | WW 1 | Unknown | ||
| James Wooley | WW 1 | YT 45 | Decom 1922, Stricken 1936 | |
| Jasmine | Civil War | Unknown | ||
| Jean Sands | Civil War | Unknown | ||
| John G. Olsen | WW 1 | Unknown | ||
| John Hancock | Civil War | Unknown | ||
| John L. Lawrence | WW 1 | YT 38 | Decom 1921, Stricken 1921 | |
| John Sealey | WW 1 | Unknown | ||
| John T. Jenkins | Civil War | Unknown | ||
| Joseph M. Clark | WW 1 | Unknown | ||
| Juliette W. Murray | WW 1 | Unknown | ||
| Junaluska | YT 176 | YTB 176 | YTM 176 | Stricken 1980, Sold |
| Juniper | Civil War | Unknown | ||
| K | ||||
| Kabout | YT 221 | YTB 221 | Decom 1959, Stricken 1959 | |
| Kakarna | YT 393 | YTB 393 | YTM 393 | Stricken to SINKEX 1979 / Sunk as a Target |
| Kalamia | WW 1 | AT 23 | Decom 1936, Stricken 1936 | |
| Kalispell | YTB 784 | Stricken 2002 | ||
| Kalmia | Civil War | Unknown | ||
| Kasota | YT 222 | YTB 222 | Decom 1961, Stricken 1961 | |
| Kennesaw | YT 255 | YTB 255 | Stricken 1960 | |
| Keokuk | YTB 771 | Active in Portsmouth, NH. | ||
| Keshena | YNT 5 | YTM 731 | Stricken 1946, Sold, Renamed Seneca | |
| Ketchikan | YTB 795 | Stricken 2002 to SINKEX, Sunk as a target | ||
| Kewaydin | WW 1 | AT 24 | Unknown | |
| Kiasutha | YTB 463 | Stricken 1947 | ||
| Kineo | WW 1 | Tug # 39 | Montcalm | Unknown |
| Kittaning | YTB 787 | Active in Japan | ||
| Kittaton | YT 406 | YTB 406 | YTM 406 | Stricken 1986, Sold / Scrapped 7/1/87 |
| Knickerbocker | WW 1 | Unknown | ||
| Koka | WW 1 | AT 31 | Unknown | |
| Konoka | YT 151 | YTB 151 | YTM 151 | Stricken 1982, Sold / Scrapped 12/15/82 |