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_47436 ( "gun class (pdr.)" real, "shot diameter (cm)" real, "shot volume (cm 3 )" real, "approx. service bore (cm)" real, "mass of projectile (kg)" real )

### Question ###
How many times is the shot volume (cm3) less than 172.76?

### Accurate SQL ###

SELECT COUNT("shot diameter (cm)") FROM table_47436 WHERE "shot volume (cm 3 )" < '172.76'