
1) Latvian feminine given name 
Found on 
https://www.crosswordclues.com/clue/imanta

 Imanta is a neighbourhood on the northwestern edge of Riga, Latvia. The neighbourhood`s northern border is Kurzeme Prospekts (Boulevard); and in the south, Imanta is separated from the newer Zolitūde neighbourhood by the Riga railroad. Prior to development, the region consisted largely of pine forests, sections of which have been preserved in An....
Found on 
http://en.wikipedia.org/wiki/Imanta

The Imanta was a French-built Latvian minesweeper of 255 tons displacement launched in 1926. The Imanta had a top speed of 14 knots and carried a complement of 39. She was armed with one 3 inch anti-aircraft gun and four machine-guns and could carry thirty mines.
Found on 
http://www.probertencyclopaedia.com/browse/RI.HTM
  No exact match found.