CREATE TABLE table_name_94 (tonnage_grt VARCHAR2, type VARCHAR2, date VARCHAR2)

what is the total tonnage grt of the cargo ship(s) sunk or captured on 4 feb 16?
SELECT COUNT(tonnage_grt) FROM table_name_94 WHERE type = "cargo ship" AND date = "4 feb 16"
SELECT COUNT("tonnage_grt") FROM "table_name_94" WHERE "4 feb 16" = "date" AND "cargo ship" = "type"