| No. | Ship Name | Ship Type | Shipyard | Date of Built |
| 1 | Westport | Trailing Suction Hopper Dredger, 54 m.loa | Zidell Explorations, Portland | 1978 - 07 |
| 2 | Newport | Trailing Suction Hopper Dredger, 80 m.loa | Nichols Bros. Boat Builders, Freeland | 1983 - 03 |
| 3 | Bayport | Trailing Suction Hopper Dredger, 92 m.loa | Gunderson Marine, Portland | 1996 - 12 |
| 4 | Glenn Edwards | Trailing Suction Hopper Dredger, 15,000 tons | Alabama Shipyard, Mobile | 2006 - 06 |
| 5 | H. R. Morris | Cutter Suction Dredger, 1,948 tons | Gunderson Marine, Portland | 1997 - 12 |