| Year | Dry-Bulk Carriers | Cement Carriers | Tankers | Totals |
|---|---|---|---|---|
| 1998 | 52 | 5 | 4 | 61 |
| 1997 | 50 | 7 | 5 | 62 |
The major U.S.-Flag Great Lakes carriers had 61 of their 70 vessels in service on May 1, a decrease of one vessel from a year ago. However, the May 1 survey results are somewhat misleading as one cement carrier and three tankers were in short-term lay-up and will resume operations in May.
| Year | Dry-Bulk Carriers | Cement Carriers | Tankers | Totals |
|---|---|---|---|---|
| 1998 | 52 | 5 | 4 | 61 |
| 1997 | 50 | 7 | 5 | 62 |
