CREATE TABLE mission (Mission_ID NUMBER, Ship_ID NUMBER, Code CLOB, Launched_Year NUMBER, Location CLOB, Speed_knots NUMBER, Fate CLOB)
CREATE TABLE ship (Ship_ID NUMBER, Name CLOB, Type CLOB, Nationality CLOB, Tonnage NUMBER)

A stacked bar chart shows the total number of ships with different nationalities and split by ship type, and order how many nationality in ascending order.
SELECT Nationality, COUNT(Nationality) FROM ship GROUP BY Type, Nationality ORDER BY COUNT(Nationality)
SELECT "Nationality", COUNT("Nationality") FROM "ship" GROUP BY "Type", "Nationality" ORDER BY COUNT("Nationality")