The American Steel Barge Company was organized in 1888 for the construction of the unique whaleback design of freighter, developed by Alexander McDougall, an immigrant from Scotland. McDougall sold it to The American Ship Building Company in 1900 and started another shipyard in Duluth. AmShip renamed the shipyard Superior Shipbuilding, but it later became AmShip Superior. It lives on today as Fraser Shipyards. See the shipyard from the air on Google here.
| Hull # | Original Name | Original Owner | Vessel Type | GT | Delivered | Disposition |
| Built by American Steel Barge | ||||||
| 101 | 101 | Barrett Manufacturing | Whaleback Barge | 428 | 1888 | Sank 1908 |
| 102 | 102 | Whaleback Barge | 1192 | 1889 | Later Sir Joseph Wentworth, later Bath, sank 1905 | |
| 103 | 103 | Whaleback Barge | 1192 | 1889 | Later John Scott Russell, later Berkshire, sank 1905 | |
| 104 | 104 | Whaleback Barge | 1295 | 1889 | Sank 1898 | |
| 105 | 105 | Whaleback Barge | 1295 | 1889 | Later Baroness, sank 1910 | |
| 106 | Colgate Hoyt | Whaleback Steamer | 1252 | 1890 | Later Bay City,sank 1909 | |
| 107 | 107 | Whaleback Barge | 1295 | 1891 | Later Bombay, sank 1913 | |
| 108 | Joseph L. Colby | Whaleback Steamer | 1245 | 1890 | Later Bay State, abandoned 1935 | |
| 109 | 109 | Pittsburgh Steamship | Whaleback Barge | 1227 | 1891 | Later Bavara, sank 1914 |
| 110 | 110 | Pittsburgh Steamship | Whaleback Barge | 1227 | 1891 | Later Badger, burned 1932 |
| 111 | 111 | Pittsburgh Steamship | Whaleback Barge | 1227 | 1891 | Later Ivie, sank 1916 |
| 112 | Charles W. Wetmore | Whaleback Steamer | 1399 | 1891 | Aground 1892 | |
| 113 | A. D. Thompson | Whaleback Steamer | 1399 | 1891 | Later Bay View, scrapped 1936 | |
| 114 | S.O. Company No. 55 | Tank Barge | 323 | 1891 | ||
| 115 | 115 | Whaleback Barge | 1169 | 1891 | Sank 1899 | |
| 116 | 116 | Pittsburgh Steamship | Whaleback Barge | 1169 | 1891 | Later Britannia, scrapped 1946 |
| 117 | 117 | Great Lakes Eng. Works | Whaleback Barge | 1310 | 1891 | Later Providence, abandoned 1932 |
| 118 | 118 | Great Lakes Eng. Works | Whaleback Barge | 1310 | 1891 | Later Boston, scrapped 1946 |
| 119 | E. B. Bartlett | Whaleback Steamer | 1399 | 1891 | Later Bay Port, sank 1916 | |
| 120 | Thomas Wilson | American Steel Barge | Whaleback Steamer | 1713 | 1892 | Sank in collision 1902 |
| 121 | Samuel Mather | Whaleback Steamer | 1713 | 1892 | Later Clifton, sank 1924 | |
| 122 | Pillsbury | Soo Line Railway Co. | Whaleback Steamer | 2234 | 1892 | Later Henry Cort, sank in collision 1934 |
| 123 | Washburn | Soo Line Railway Co. | Whaleback Steamer | 2234 | 1892 | Later J. T. Reid, scrapped 1936 |
| Islay | 26 | 1892 | ||||
| 124 | Pathfinder | Whaleback Steamer | 2424 | 1892 | Later Progress, scrapped 1933 | |
| 125 | Sagamore | Huron Barge | Whaleback Barge | 1601 | 1892 | Sank 1901 |
| 126 | 126 | Pittsburgh Steamship | Whaleback Barge | 1128 | 1892 | Later Baden, abandoned 1905 |
| 127 | 127 | Pittsburgh Steamship | Whaleback Barge | 1128 | 1892 | Later Jennie, later Dallas, scrapped 1936 |
| 128 | James B. Colgate | Standard Transit | Whaleback Steamer | 1713 | 1892 | Sank 1916 |
| Christopher Columbus | Goodrich Transit | Passenger Steamer | 1511 | 1893 | Scrapped 1936 | |
| 129 | 129 | Pittsburgh Steamship | Whaleback Barge | 1310 | 1893 | Sank in collision 1902 |
| 130 | 130 | Great Lakes Eng. Works | Whaleback Barge | 1310 | 1893 | Later Lynn, scrapped 1924 |
| 131 | 131 | Great Lakes Eng. Works | Whaleback Barge | 1310 | 1893 | Later Salem, scrapped 1946 |
| 132 | 132 | Great Lakes Eng. Works | Whaleback Barge | 1310 | 1893 | Later Portsmouth, sank 1927 |
| 133 | 133 | Great Lakes Eng. Works | Whaleback Barge | 1310 | 1893 | Later Searsport, sank 1911 |
| 134 | 134 | Great Lakes Eng. Works | Whaleback Barge | 1310 | 1893 | Later Bangor, abandoned 1912 |
| 135 | John B. Trevor | Whaleback Steamer | 1713 | 1895 | Later Atikokan, scrapped 1925 | |
| S.O. Company No. 75 | Tank Barge | 793 | ||||