The San Jorge was a small screw-propeller steamship that operated briefly on the lower Colorado River and into the Gulf of California in 1901 as part of the late-era commercial navigation on the river.
It belonged to the Mexican-Colorado Navigation Company, a short-lived operator formed in Los Angeles by Alphonso B. Smith, W. S. Twogood, and E. E. Busby. The company ran vessels from Yuma, Arizona, between 1901 and 1907, competing in the final phase of Colorado River steamboating after railroads had already captured most long-distance traffic. Its fleet included the San Jorge (1901), the paddle-wheel launch Retta (1900–1905), and the sternwheeler St. Vallier (1901–1907).
Design and Construction
The San Jorge was a propeller-driven (screw) steamer measuring approximately 38 feet in length and 9 feet in beam, with a very shallow draft of about 18 inches. It was built in Chicago, shipped to the Colorado River, and launched at Yuma in June 1901.
Unlike the dominant sternwheel paddle steamers that characterized Colorado River navigation for decades (such as the Gila, Mohave II, or Cochan), the San Jorge used a screw propeller. This design choice reflected an attempt at a more compact, potentially more efficient vessel suited to open-water runs into the Gulf of California rather than the river’s shifting sandbars, shallow channels, and debris. Sternwheelers excelled on the shallow, variable Colorado because their large paddlewheels at the stern provided good traction in low water and could be more easily repaired or protected. Screw propellers, by contrast, were more vulnerable to damage from sand, snags, and the river’s muddy bottom and proved less ideal for the shallow inland stretches. The San Jorge’s small size and light draft made it suitable for coastal/gulf service connecting to the river mouth, but its propellers were poorly adapted to the river proper.
Contemporary accounts note practical limitations: on its maiden return voyage from the Gulf around early June 1901, it ran out of coal and was delayed for about two weeks. Disposition records simply note it went “to the Gulf” in July 1901, with little further documented river service under the company.
Role in Expanding (and Sustaining) Trade
Colorado River steamboating began in the early 1850s primarily to supply the isolated U.S. Army post at Fort Yuma more cheaply than overland wagon freight from California ports. George A. Johnson & Company (later the Colorado Steam Navigation Company) dominated for decades, carrying military supplies, mining equipment, ore, settlers, and passengers between the Gulf of California (via Port Isabel and related landings) and upriver points as far as the Virgin River area in high water. Peak traffic supported mining booms (La Paz, Eldorado Canyon, Searchlight, etc.), military posts, and early settlement.
By 1901 the era was in steep decline. The Southern Pacific Railroad reached Yuma in 1877 and other lines followed, undercutting steamboat rates and volumes. The Mexican-Colorado Navigation Company entered as a late competitor, aiming at residual local freight, passenger traffic, and connections into Mexican waters of the Gulf of California (including runs toward San Jorge Bay, roughly 75 miles below the river mouth). The San Jorge was specifically intended for these gulf runs, supporting trade links between Yuma and coastal points while the company’s other boats (Retta and later St. Vallier) handled more upriver work.
Its contribution to “expanding” trade was limited and late-stage. It helped sustain short-haul and cross-border connections after the main boom years, when railroads already dominated long-haul movement of goods and people. The company competed with remaining Colorado Steam Navigation Company vessels (such as the Cochan) for mining-related freight and passengers on the lower river. Operations faced the same challenges that had always marked the Colorado: shifting channels, low water, snags, and fuel shortages. Broader commercial navigation effectively ended with the completion of Laguna Dam (about 14 miles above Yuma) in 1909, which blocked the channel; residual activity continued only a few more years.
In summary, the San Jorge was a minor, specialized vessel in the twilight of Colorado River steam navigation—a small screw steamer built for gulf connections rather than the classic shallow-draft sternwheelers that had opened the lower river to reliable commerce decades earlier. Its short documented career illustrates both the ingenuity applied to the difficult waterway and the rapid displacement of river steam by rail and, ultimately, dams. Primary details derive from Richard E. Lingenfelter’s Steamboats on the Colorado River, 1852–1916 and contemporary vessel lists.