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

Compute the total the total number across type as a pie chart.
SELECT Type, COUNT(*) FROM ship GROUP BY Type
SELECT "Type", COUNT(*) FROM "ship" GROUP BY "Type"