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| History | |
|---|---|
| Name | Three Sisters |
| Owner | Oregon Pacific Railroad Company |
| Route | Willamette River |
| Completed | 1886 |
| Fate | Dismantled, 1896, at Corvallis, OR |
| General characteristics | |
| Class and type | Riverine towboat |
| Length | As built 120.7 ft (36.8 m) over hull (exclusive of fantail); as reconstructed 1888: 140.7 ft (42.9 m) |
| Beam | 30.2 ft 9 in (9.4 m) over hull (exclusive of guards |
| Depth | 4.4 ft 0 in (1.34 m) |
| Decks | two (main and passenger) |
| Installed power | twin steam engines, horizontally mounted, each with bore of 12 in (304.8 mm) and stroke of 4 ft (1.22 m); 144 indicated horsepower |
| Propulsion | stern-wheel |
Three Sisters was a sternwheel-driven steamboat that operated on the Willamette River from 1886 to 1896. The steamer was built as an extreme shallow-draft vessel, to permit it to reach points on the upper Willamette river such as Corvallis, Harrisburg and Eugene, Oregon during summer months when water levels in the river were generally low. The vessel was also known for having been washed up on a county road in Oregon during a flood in 1890.