CREATE TABLE table_68588 ("Terminal" CLOB, "Operator" CLOB, "Depth  ( m ) " CLOB, "Berths" FLOAT, "Quay cranes" FLOAT)

Name the lowest Quay cranes for Berths of 1 and operator of mtl with terminal of terminal 5 (ct5)
SELECT MIN("Quay cranes") FROM table_68588 WHERE "Berths" = '1' AND "Operator" = 'mtl' AND "Terminal" = 'terminal 5 (ct5)'
SELECT MIN("Quay cranes") FROM "table_68588" WHERE "Berths" = '1' AND "Operator" = 'mtl' AND "Terminal" = 'terminal 5 (ct5)'