Question: When was the ship launched when the commissioned or completed(*) is 6 June 1864?
SQL: SELECT "Launched" FROM "1-12592074-1" WHERE "Commissioned or completed(*)" = '6 June 1864';

Question: When was the ship Tecumseh launched?
SQL: SELECT "Launched" FROM "1-12592074-1" WHERE "Ship" = 'Tecumseh';

Question: What is the namesake of the ship that was commissioned or completed(*) 16 April 1864?
SQL: SELECT "Namesake" FROM "1-12592074-1" WHERE "Commissioned or completed(*)" = '16 April 1864';

Question: What is the minimum laid down?
SQL: SELECT MIN("Laid down") FROM "1-12592074-1";