When did the ship commissioned in November 1975 with a bow number of ps-18 launch?
CREATE TABLE table_name_33 (launched VARCHAR, commissioned VARCHAR, bow_number VARCHAR)
SELECT launched FROM table_name_33 WHERE commissioned = "november 1975" AND bow_number = "ps-18"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_name_33 (launched VARCHAR, commissioned VARCHAR, bow_number VARCHAR) Question: When did the ship commissioned in November 1975 with a bow number of ps-18 launch? [/INST] SELECT launched FROM table_name_33 WHERE commissioned = "november 1975" AND bow_number = "ps-18" </s>