Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_name_94 (tonnage_grt VARCHAR, type VARCHAR, date VARCHAR)

### Question ###
what is the total tonnage grt of the cargo ship(s) sunk or captured on 4 feb 16?

### Accurate SQL ###

SELECT COUNT(tonnage_grt) FROM table_name_94 WHERE type = "cargo ship" AND date = "4 feb 16"