Build me a Spanish sailor's craft (10)
I believe the answer is:
seamanship
'sailor's craft' is the definition.
'seamanship' can be an answer for 'craft' (thesaurus). I am not sure about the 'sailor's' bit.
'build me a spanish' is the wordplay.
'build' is an anagram indicator.
'me'+'a'+'spanish'='measpanish'
'measpanish' anagrammed gives 'SEAMANSHIP'.
Can you help me to learn more?
(Other definitions for seamanship that I've seen before include "Sailing skills" , "Skill of a sailor" .)