Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_name_71 ( in_service INTEGER, vessel VARCHAR )

### Question ###
What is the lowest listed In service for a vessel of xavery czernicki class?

### Accurate SQL ###

SELECT MIN(in_service) FROM table_name_71 WHERE vessel = "xavery czernicki class"