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_291768_1 (shipyard VARCHAR, commissioned VARCHAR)

### Question ###
which vessel area was called for on november 30, 1970

### Accurate SQL ###

SELECT shipyard FROM table_291768_1 WHERE commissioned = "November 30, 1970"