
1) Sailboat type 2) Ship of Thailand 
Found on 
https://www.crosswordclues.com/clue/lorcha
 [boat]
[boat]  The lorcha is a type of sailing vessel having a Chinese junk rig on a Portuguese or European style hull. Because of its hull structure, the vessel is faster and can carry more cargo than the normal Chinese junk. The advantage of a junk rig was in its ease of handling and resulting ability to be sailed with a minimal crew, together wi...
Found on 
http://en.wikipedia.org/wiki/Lorcha_(boat)

• (n.) A kind of light vessel used on the coast of China, having the hull built on a European model, and the rigging like that of a Chinese junk.
Found on 
http://thinkexist.com/dictionary/meaning/lorcha/
 Lor'cha  noun
Lor'cha  noun [ Portuguese ] 
 (Nautical) A kind of light vessel used on the coast of China, having the hull built on a European model, and the rigging like that of a Chinese junk. 
 Admiral Foote. Found on 
http://www.encyclo.co.uk/webster/L/62

A Lorcha is a light Chinese sailing vessel, carrying guns, and built after the European model, but rigged like a Chinese junk.
Found on 
http://www.probertencyclopaedia.com/browse/RL.HTM
  No exact match found.