The YT-86-class harbor tugboat was a wood-hulled tugboat design ordered by the U.S. Navy during World War I.[2] 15 ships of the type were launched and completed, 12 as harbor tugs (Nos. 86-90 and 92-99) and three as ambulance boats (Nos. 91, 100, and 101 were designated as Ambulance Boats No. 1, No. 2, and No. 3).[3] All were launched at the Mare Island Naval Shipyard in Vallejo, California except for one (No. 90) at the Pearl Harbor Naval Shipyard in Hawaii.[3][4] In 1920, after the Navy's adoption of alpha-numeric hull designations, the ships were classified as yard tugs YT-86 though YT-90 and YT-92 through YT-99 and ambulance boats YH-1, YH-2, and YH-3.
| Class overview | |
|---|---|
| Name | YT-86-class harbor tugboat |
| Builders | Mare Island Naval Shipyard, Vallejo, California Pearl Harbor Naval Shipyard, Hawaii |
| Built | 1918-1920 |
| Planned | 15 |
| Completed | 15 |
| General characteristics | |
| Type | Tugboat |
| Tonnage | 54 gross tons[1] |
| Length | 65 ft 8 in (20.02 m)[1] |
| Beam | 16 ft 2 in (4.93 m)[1] |
| Draft | 6 ft 2 in (1.88 m)[1] |
| Propulsion | one Union 4 cylinder, 4 cycle gasoline engine, 150shp, single 12" X 15" propeller |
See also
editReferences
edit- ^ a b c d Priolo, Gary P.; Wright, David L. "YTL-86, ex-YMT-1 (1929 - 1944), YT-86 (1920 - 1929), Harbor Tug No. 86 (1918 - 1920)". NavSource - Naval Source History. Retrieved June 7, 2022.
- ^ "U. S. Navy Harbor Tug No. 85, 1919-1920". Naval Historical Center. May 2007.
- ^ Colton, Tim (May 7, 2011). "Yard Tugs (YT, YTB, YTM, YTL) Built or Acquired Before WWII". ShipbuildingHistory. Retrieved 10 July 2022.
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