McDermott Shipbuilding was a major builder of tugs in its original Morgan City shipyard. It opened a second yard in New Iberia during the offshore boom of the late 1970s and early 1980s.
| Hull # | Name | Owner | Type | GT | Delivery | Disposition |
| 100 | Barbara Foss | Foss Maritime | Tug | 198 | Jun-76 | Active |
| 101 | Justine Foss | Foss Maritime | Tug | 198 | Aug-76 | Active |
| 102 | Ocean Star | Tug | 197 | Apr-76 | Now Alexandra | |
| 103 | Ocean Voyager | Tug | 198 | Jun-76 | Now Thomas | |
| 104 | Centurion | Crowley Marine | Tug | 199 | Jun-76 | Active |
| 105 | Gauntlet | Crowley Marine | Tug | 199 | Aug-75 | Active |
| 106 | Sidney Foss | Foss Maritime | Tug | 198 | Nov-76 | Active |
| 107 | Moana Holo | Young Bros. | Tug | 198 | Jan-77 | Active |
| 108 | Drew Foss | Foss Maritime | Tug | 198 | Mar-77 | Active |
| 109 | Tideland 17 | Deck Barge | 2576 | Jun-77 | Now McDermott Tidelands 017 | |
| 110 | Lamco VI | Tug | 455 | Mar-78 | Now Adriatic Sea | |
| 111 | ||||||
| 112 | ||||||
| 113 | Inmar Baron | Offshore Service Vessel | 298 | Apr-78 | Now Cape Hunter | |
| 114 | Inmar Duke | Offshore Service Vessel | 281 | Jun-78 | Now Cape Sable | |
| 115 | Inmar Count | Offshore Service Vessel | 281 | Jul-78 | Now Cape Lookout | |
| 116 | Inmar Prince | Offshore Service Vessel | 673 | Aug-78 | Now Sea Spirit | |
| 117 | Marcia Ann | Offshore Service Vessel | 1074 | Nov-78 | Now GECO Dolphin | |
| 118 | Josh Wilson | Offshore Service Vessel | 1203 | Dec-78 | Now Gulf Stim | |
| 119 | Mark Briley | Offshore Service Vessel | 394 | Feb-79 | Now Windward Sentry | |
| 120 | Angela Briley | Offshore Service Vessel | 297 | Mar-79 | Now Flood Tide III | |
| 121 | ||||||
| 122 | ||||||
| 123 | Ocean Chief | Tug | 148 | Nov-79 | Now Katherine | |
| 124 | Munson Tide | Tidewater Marine | Offshore Service Vessel | 289 | Mar-80 | Active |
| 125 | Porciau Tide | Tidewater Marine | Offshore Service Vessel | 289 | Apr-80 | Active |
| 126 | Rouge Tide | Tidewater Marine | Offshore Service Vessel | 293 | Jun-80 | Active |
| 127 | Al Tide | Tidewater Marine | Offshore Service Vessel | 293 | Jul-80 | Active |
| 128 | Sallis Tide | Tidewater Marine | Offshore Service Vessel | 289 | Aug-80 | Now Apollo Tide |
| 129 | ||||||
| 130 | Falcon Rig 42 | Falcon Drilling | Drilling Barge | 3213 | Jan-82 | Now Falcon 42 |
| 131 | Eagle M-101 | Platform Rig | 4930 | Oct-80 | Now Parker Rig 74 | |
| 132 | Falcon Rig 43 | Falcon Drilling | Drilling Barge | 3213 | Jan-81 | Now Falcon 43 |
| 133 | ||||||
| 134 | Tejas | Platform Rig | 3192 | Sep-81 | Now Parker Rig 73 | |
| 135 | ||||||
| 136 | ||||||
| 137 | ||||||
| 138 | Sea Level No. 7 | Offshore Service Vessel | 300 | Jun-81 | Now NAWC 38 | |
| 139 | Sea Level No. 27 | Offshore Service Vessel | 300 | Jul-81 | Now Ranger | |
| 140 | K Marine No. I | Offshore Service Vessel | 298 | Sep-81 | Now Cutlass Service | |
| 141 | K Marine No. II | Offshore Service Vessel | 198 | Oct-81 | Now Excalibur Service | |
| 142 | K Marine No. III | Offshore Service Vessel | 298 | Dec-81 | Now Rapier Service | |
| 143 | K Marine No. IV | Offshore Service Vessel | 298 | Mar-82 | Now Sabre Service | |
| 144 | Noble PB-2 | Noble Drilling | Platform Rig | 3030 | Aug-82 | Now Parker Rig 72 |
| 145 | Barton Tide | Tidewater Marine | Offshore Service Vessel | 298 | Mar-82 | Active |
| 146 | Tower Tide | Tidewater Marine | Offshore Service Vessel | 298 | May-82 | Active |
| 147 | ||||||
| 148 | Louise Pelham | Offshore Service Vessel | 298 | Sep-82 | Now Range Rover | |
| 149 | ||||||
| 150 | ||||||
| 151 | Noble PB-3 | Noble Drilling | Platform Rig | 3030 | Jul-82 | Now Raisis |
| 152 | Jaramac 68 | J. Ray McDermott | Tug | 300 | Dec-85 | Now Doc Tide II |
| 153 | Jaramac 69 | J. Ray McDermott | Tug | 300 | Dec-85 | Now Louie Tide |
| 154 | Needham Tide | Tidewater Marine | Offshore Service Vessel | 750 | Mar-83 | Active |
| 155 | Tad Tide | Tidewater Marine | Offshore Service Vessel | 298 | May-83 | Active |
| 156 | Whittie Tide | Tidewater Marine | Offshore Service Vessel | 750 | May-83 | Active |
| 157 | Toups Tide | Tidewater Marine | Offshore Service Vessel | 298 | Jul-83 | Active |
| 158 | Marks Tide | Tidewater Marine | Offshore Service Vessel | 298 | Oct-83 | Active |
| 159 | O'Neil Tide | Tidewater Marine | Offshore Service Vessel | 298 | Oct-83 | Active |
| 160 | Jan Tide | Tidewater Marine | Offshore Service Vessel | 289 | Dec-83 | Active |
| 161 | Abshire Tide | Tidewater Marine | Offshore Service Vessel | 848 | Dec-83 | Active |
| 162 | Dickerson Tide | Tidewater Marine | Offshore Service Vessel | 1078 | Mar-84 | Now Aerostat Mooring Vessel |
| 163 | Carlson Tide | Tidewater Marine | Offshore Service Vessel | 1077 | Apr-84 | Active |
| 164 | CGA-200 | Clean Gulf Associates | Tank Barge | 1211 | Jun-85 | Active |
| 165 | Mauna Loa | Matson Navigation | Container Barge | 3,562 | Dec-84 | Active |