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_84 (name VARCHAR, date VARCHAR, sunk_by VARCHAR)

### Question ###
What is the name of the ship sunk by U-305 on 17 March 1943?

### Accurate SQL ###

SELECT name FROM table_name_84 WHERE date = "17 march 1943" AND sunk_by = "u-305"