Hull Youth Football’s carnival kicks off Wednesday and runs through next Sunday, with fireworks over the water Saturday night. In case of rain, the fireworks will go off the following night, according to organization president Robert Cambra. The 22d annual carnival will take place across from Nantasket Beach on a lot owned by the Hull Redevelopment Authority. The carnival will be open Wednesday, Thursday, and Sunday from 6 to 10 p.m., and Friday and Saturday from 6 to 11 p.m. Hull Youth Football serves about 200 players and cheerleaders, Cambra said. “The money we raise runs our program for the year. We keep our fingers crossed” for good weather, he said. Cambra said donations are welcome to help pay for the fireworks.