Table: gun_specs
Columns: designation
bore
weight
service_charge
range_yards
number_made

Question: What is the service charge of the boat howitzers with 456 made?
SQL: SELECT "service_charge" FROM gun_specs WHERE "number_made" = 456

Question: What is the service chage of the boat howitzers with a 12-pdr light destination?
SQL: SELECT "service_charge" FROM gun_specs WHERE "designation" = '12-pdr light'

Question: What is the service charge of the boat howitzers with 1009 made?
SQL: SELECT "service_charge" FROM gun_specs WHERE "number_made" = 1009

Question: What is the bore of the boat howitzers with a 12-pdr heavy designation?
SQL: SELECT "bore" FROM gun_specs WHERE "designation" = '12-pdr heavy'