Etna, California . Etna, California Etna is a city in the Scott Valley area of Siskiyou County, California, United States. The population was 737 at the 2010 census, down from 781 at the 2000 census. Originally named Rough and Ready, it was changed by statute in 1874 to Etna after the local flour mill (spelled Ætna/Aetna after Mount Ætna in Sicily). Etna is located at (41.457350, -122.896875). Etna is in Northern California near the Oregon border, located in Scott Valley near the CDP of Greenview, the city of Fort Jones, and the unincorporated community of Callahan. Etna is located at the foot
Etna-class replenishment oiler Etna-class replenishment oiler "Etna"-class is a ship class of two naval replenishment and logistic support ships used by the Italian Navy and by the Greek Navy The two ships are almost identical but they have differences in their armament and sensor equipment. Fincantieri shipyards were awarded the contract for Etna in July 1995, and the ship was launched in July 1997. The ship was commissioned into the Italian Navy in February 1998. Etna's main role is to fully support the long-range missions of a naval squadron, which would typically include an aircraft carrier and complete escort. Additionally it has to