Table:
text: Emergency Shipbuilding program
Shipyards in the program
Yards on the West Coast
Yard_Name Location_city_state _1st_Ship_Delivery_Date Ship_Types_Delivered Total_Number_of_Ways total_vessels_built
Kaiser Company, Inc. Swan Island, Portland, Oregon December 1942 T2 type 8 ways __ ships for USMC
Kaiser Cargo (Richmond yard #4) Richmond, California April 1943 S2 (LST) type, S2 (frigate) type, C1-M type 3 ways __ ships for USMC
Kaiser Shipbuilding (Richmond yard #3) Richmond, California August 1943 C4 type 5 ways (basins) __ ships for USMC

Question: What was the delivery date when type S2 (lst), type S2 (frigate), type C1-M were delivered for emergency ship building programs on west coast, shipyards in program?