ATA-214-class_tug
The ATA-214 class was a group of five auxiliary tugs built for the United States Navy in World War II and decommissioned shortly thereafter. They were laid down initially as Ailanthus-class net laying ships, but on 10 July 1944 the last ten ships of the latter class were cancelled.[1] On 5 August 1944 the cancellation was rescinded for those on which construction had commenced (these five), and they were directed to be completed as tugs.[1] The originally assigned names were dropped, and they were identified only by hull numbers ATA-214 through ATA-218.[1] However, for reasons unexplained, ATA-218 was commissioned as USS Yaupon.[2]
Some changes were made as construction progressed. After the first two were completed (ATA-214 and ATA-216) the mainmast was moved forward to rest directly behind the funnel, and the boom on this mast was eliminated as unnecessary.[3] Armament varied as well, based upon experiences with the Ailanthus class vessels already built. The first two completed had a single 3" gun mounted on a platform ahead of the bridge, and three 20mm antiaircraft guns mounted in two tiers in front of the funnel.[4] It was found that the upper of these three was too close to the funnel, and for the next two (ATA-215 and ATA-217) this mount was relocated immediately behind the mainmast.[3][5] For the last ship (ATA-218) the 3" gun was eliminated (though its platform remained) and two 40mm AA guns were mounted on the forecastle.[6]
All five served in the Pacific theater, and ATA-215, ATA-216, and ATA-218 also participated in the occupation of Japan in various periods from September to November 1945. ATA-215 was loaned to the Ronne Antarctic Research Expedition and sold upon its return;[3] the others were sold through the Maritime Commission.[1]