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_12592074_1 (launched VARCHAR, commissioned_or_completed_ VARCHAR, _ VARCHAR)
### Question:
When was the ship launched when the commissioned or completed(*) is 6 june 1864?
### Answer:
SELECT launched FROM table_12592074_1 WHERE commissioned_or_completed_ * _ = "6 June 1864"