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

What is the total number of every ship type by categorizing by nationality?, and could you sort in desc by the the number of type please?
SELECT Type, COUNT(Type) FROM ship GROUP BY Nationality, Type ORDER BY COUNT(Type) DESC
SELECT "Type", COUNT("Type") FROM "ship" GROUP BY "Nationality", "Type" ORDER BY COUNT("Type") DESC