
1) Black Sea feeder 2) Blue flower 3) Blue streamer 4) Blue water 5) Danube river 6) European river 7) European waterway 8) European watercourse 9) Inspiration for strauss 10) It rises in the black forest 11) Long waterway 12) Long European waterway 13) Long watercourse 14) Long European watercourse 
Found on 
https://www.crosswordclues.com/clue/danube
 [ship]
[ship]  The Danube, a 1,459 ton sailing ship named after the second longest river in Europe, was built in 1890 for the Nourse Line. On 15 June 1891 she made a voyage to Fiji carrying 591 Indian indentured labourers. She also made a trip to Trinidad, arriving on 1 January 1892, carrying 609 passengers. There were 29 deaths during this voyage....
Found on 
http://en.wikipedia.org/wiki/Danube_(ship)

[
n] - the 2nd longest European river
Found on 
http://www.webdictionary.co.uk/definition.php?query=Danube
 Danube River noun
Danube River noun the 2nd longest European river (after the Volga); flows from southwestern Germany to the Black Sea; `Vienna, Budapest, and Belgrade are on the banks of the Danube`
Found on 
https://www.encyclo.co.uk/local/20974

Second longest of European rivers, rising on the eastern slopes of the Black Forest, and flowing 2,858 km/1,776 mi across Europe to enter the Black Sea in Romania by a swampy delta. The head of river navigation is Ulm, in Baden-Württemberg; Braila, Romania, is the limit for ocean-going ships. Cities on the Danube include Linz, ...
Found on 
https://www.encyclo.co.uk/local/21221
  No exact match found.