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_19872699_1 ( flag VARCHAR, design_firm VARCHAR )

### Question ###
Farr Yacht Design designed boats for how many country/flags?

### Accurate SQL ###

SELECT COUNT(flag) FROM table_19872699_1 WHERE design_firm = "Farr Yacht Design"