Quick drawing of small sailing boat (6)
I believe the answer is:
sketch
This clue is a double definition.
'quick drawing' is the first definition.
(I've seen this in another clue)
'small sailing boat' is the second definition.
(I've seen this before)
'of' is the link.
(Other definitions for sketch that I've seen before include "bit of a performance" , "Short humorous scene" , "Rough picture" , "Rapid drawing - short play" , "An outline drawing or a comedy number" .)