Smoke Curtain Installation (S.C.1) or M10 Airplane Smoke Tank
The M10 Model Airplane Smoke Tank weighed 68lb empty, had a capacity of 33 gallons, and it took 5 to 6 seconds to completely discharge
This type of American 'Smoke Curtain Installation' device was used during the Second World War D-Day operations by RAF Boston aircraft to lay a smoke curtain which screened assaulting craft from the shore batteries at Le Havre, and the East coast of the Cherbourg Peninsula. There is no doubt that the efficacy of the smoke screen played an important part in the success of the Normandy landings.
The aircrafts' approach to the area was made at 300ft, the actual smoke laying being done at sea level. Each aircraft laid up to 5,000 yards of smoke screen.
Aerial created 'smoke curtains' were deployed by the USAAF and other services, and used extensively in the South Pacific against the Japanese.
Many types of aircraft used the equipment, but the Bostons were the most consistent users. (Information derived from a letter from Air Historical Branch, RAF, dated 3 July 1958).
Embossed plate & painted
Chemical Warfare Service
10 M ......Airplane Smoke