The Coos Bay Mosquito Fleet comprised numerous small steamboats and motor vessels which operated in the late 19th and early 20th centuries on Coos Bay, a large and mostly shallow harbor on the southwest coast of the U.S. state of Oregon, to the north of the Coquille River valley. Coos Bay is the major harbor on the west coast of the United States between San Francisco and the mouth of the Columbia River.

Establishment of inland water routes
Inland riverboats were used to navigate the bay and the several rivers flow that flow into it. Many of the passages were quite narrow, for example Beaver Slough was aptly named, as every night beavers built dams across the slough which had to be dismantled to allow the passage of Mud Hen.

Nat H. Lane and W.H. Troup, both steamboat captains from the Columbia River, began steamboat operations on Coos Bay in 1873. They built and operated Messenger, doing business as the Coos Bay and Coquille Transportation Company.

One feature of Coos Bay was that  one shallow southern arm called Isthmus Slough reaches south almost to Beaver Slough, a shallow north-extending branch of the Coquille River. In 1869 Judge Gilbert Hall built a mule-hauled portage railway across the Isthmus. This line, which was a little over 1.5 miles long, cost $8,000 to build, and consisted of wooden rails laid on rough wooden sleepers, with trestles crossing the ravines that were encountered along the route. The transport on the route consisted of a single wagon carrying a platform, with one man driving the wagon.

Smaller steamboats ran up Isthmus Slough to the north landing to connect to the portage railway, where passengers and freight were transferred to a wagon, and then hauled across the isthmus to Hall's southern landing on Beaver Slough. In 1872, the steamboat Satellite made daily trips from Empire City to Isthmus Slough. Satellite also ran 18 miles up the Coos River twice a week. Once at the south landing, canoes and small unpowered boats carried passengers and freight south to the Coquille River. The journey was about 6 miles from the north landing to the Coquille River. It took one day to make the trip, and the railway carried about 2 tons of freight in a single day. In 1873, about 600 tons of freight were shipped over the line.

In August 1874, construction began on a steam-powered narrow gauge portage railroad to replace the mule-hauled cars. The narrow gauge steam line was called the "Isthmus Transit Railroad".

This was a good shortcut between Marshfield, as Coos Bay was then called, and Coquille, and it also eliminated the need to cross the hazardous Coos and Coquille bars by the ocean.

Frank Lowe had a shipyard in Marshfield, and in the early part of the century he produced many vessels for the Mosquito Fleet, including the propeller Coquille and the sternwheelers Millicoma and Rainbow.

Rise of the Mosquito Fleet
In 1876, Capt. A. Campbell and son launched the steamer Juno on the Coos River. Captain Campbell ran Juno for over ten years, after which the vessel was commanded by N.J. Cornwall Sometime before 1895, the Campbells sold Juno to W.F. Jewett.

In 1899, the 13-ton propeller steamer Alma (later renamed Jauniata) was built for passenger service on Coos Bay. Gasgo, 8 tons, powered by gasoline, was built in 1900 at Marshfield, and was placed in passenger service on Coos Bay and the Umpqua River. In 1901, the small (9 tons) gasoline-engine launch Relief was built at Marshfield by the Holland Brothers for passenger and towing work on Coos Bay. In 1903, Comet (9 tons), Curlew, Dixie (8 tons), Eagle (12 tons), and Fish were all built at Marshfield for the Coos bay service. Dixie also served on the Coquille River.

In 1907, Max Timmerman launched Bonita (14 tons) and City of Coos Bay (later Sunrise) (13 tons), both used on Coos Bay and the Umpqua River. W.W. Holland built the passenger vessels Beaver (later converted to a tug and renamed Atomic) (8 tons), Express, Queen (14 tons) and Koos (10 tons), all for the Coos Bay service. Other boats built for Coos Bay work 1907 included from Marshfield yards, by G.H. Elliott, Messenger (10 tons), and by Frank Lowe, Telephone (7 tons). At North Bend, Z.A. Kanick built Tioga (11 tons), and at Allegany, H.P. McCallon built Transfer.

In 1908, Peter Olson built Coast (later renamed Enterprise and Arrow No. 5). Arthur Mattson built Marshfield at Eastside. J.D. Ross built Traveler (8 tons) at Pleasant Point and Max Timmerman built Victor (8 tons) and Wolverine (14 tons) at his Marshfield yard. Also in 1908, W.W. Holland built Ranger (12 tons) and Shamrock (8 tons) at Marshfield. North Bend yards also produced a number of smaller vessels in 1908.  George Smith built the towboat Arrow, Peter Peterson built Vega, J.H. Cullon builtMawnell (8 tons), and C.A. Johnson built North Star.

In 1909, Timmerman built the gas boats Hercules and Mae, both 12 tons, and Holland built Alice H. (11 tons). In 1912, various yards around Coos Bay built the small gasoline-powered vessels Albatross (13 tons), Freak (11 tons), and Union (7 tons).  Turtle (16 tons) was built the same year, and a good photo of her survives, loading wood components, probably ship's knees for the construction of a steam schooner.

1912 was a bad year for wrecks among the mosquito fleet. On March 6, 1912, Curlew, which had been hauling milk from Sumner to Marshfield, collided with the Simpson Lumber Company's tug Columbia at North Bend, and sank as a result. On December 30, 1912, Mayflower burned at Coos Bay. Worst of all, on January 20, 1912, the North Star No. 1, which had been operated by Joseph Yonkers between Marshfield and the South Inlet, drifted over the bar and capsized, drowning Yonkers and five passengers. Bad as this was, it could have been worse, as North Star No. 1 had dropped off 12 passengers at a landing just before the accident.

Mission boat Life-Line
One of the more unusual vessels built in 1912 was Life-Line, a gasoline-powered  propeller vessel designed by George H. Hitchings and built for use as a mission boat by the Rev. G. L. Hall of the American Baptist Publications Society. Marshall summed up Life-Line's career and ended as follows:

List of vessels

References

Works cited

External links
Photo of Mud Hen, Aug 12, 1915

 
 Coos Bay
Transportation in Coos County, Oregon
Steamboats by body of water