Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
### Context:
CREATE TABLE table_name_97 (date INTEGER, u_boats_destroyed__pola_ VARCHAR)
### Question:
What's the highest Date listed that has U-boats destroyed (Pola) of 1?
### Answer:
SELECT MAX(date) FROM table_name_97 WHERE u_boats_destroyed__pola_ = "1"