| Owner | Manager | From | Until | | Sarnia Steamships Ltd. - Sarnia, Ontario, Canada | | 1929/05 | 1951/01 |
| Colonial Steamships Ltd. - Port Colborne, Ontario | | 1951/01 | 1959/01 |
| Scott Misener Steamships Ltd. - Port Colborne, Ontario, Canada | R. Scott Misener - Canada | 1959/01 | 1961/01 |
| A. Spiegal Ltd. - Canada | | 1961/01 | 1962/01 |
|
| Fleet | From | Until | | Sarnia Steamships Ltd. - Sarnia, Ontario | 1929/05 | 1951/01 |
| Colonial Steamships Ltd. - Port Colborne, Ontario | 1951/01 | 1959/01 |
| Scott Misener Steamships Ltd. - Port Colborne, Ontario | 1959/01 | 1961/01 |
|