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_81 (ship VARCHAR, country VARCHAR, builder VARCHAR)

### Question ###
What ship was built by Palmers Shipbuilding and Iron Company for the Royal Navy?

### Accurate SQL ###

SELECT ship FROM table_name_81 WHERE country = "royal navy" AND builder = "palmers shipbuilding and iron company"