- THIS should be the german translation of the following text :

TI G7a "Ato"

Gerate-Nr:	12
Diameter:	533,4mm
Weight:		1538Kg
Lenght:		7163mm
Charge:		Ka280, or Kc280 warhead, 280Kg (Hexanite)
Pistol:		Pi1 G7 AZ, or TZ3 with Pi3
Arming:		250m (pre-1943)
		150m (post-1943)
Range/Speed:	6000m/44Kn (pre-1941)
		7500m/40Kn (pre-1941)
		12500m/30Kn (pre-1941)
		6000m/44Kn (post-1941)
		8000m/40Kn (post-1941)
		14000m/30Kn (post-1941)
Power:		Decahydronaphthalene (Decalin) Wet-Heater, 4 cylinders.
		108hp at 940U/min (pre-1941)
		241hp at 1270U/min (pre-1941)
		300hp at 1500U/min (pre-1941)
		255hp at 1280U/min (post-1941)
		350hp at 1470U/min (post-1941)

It was found that using 44Knots speed, overloads the engine, and therefore it wasn't recommended using the maximum speed shortest range torpedo configuration. The early models had a range of about 20% less than the standard values being specified of 6000m/44Kn, 8000m/40Kn, 14000m/30Kn, being in fact of 7500m/40Kn and 12500m/30Kn. Power output also changed, from 108hp/940U/min, 241hp/1270U/min, 300hp/1500U/min, to 255hp/1280U/min, and 350hp/1470U/min. The warhead being used is a Ka280 or Kc280 warhead, with 280Kg of Hexanite. Explosive charge was usually 60% trinitrotoluene + 40% hexanitrodyphenylamine, in various mixes:
	SW18:  50% TNT, 24% HND, 15% Aluminium.
	SW36:  67% TNT, 8% HND, 25% Aluminium.
	SW39:  45% TNT, 5% HND, 30% Amonium nitrate, 20% Aluminium.
	SW39a: 50% TNT, 10% HND, 5% Amonium nitrate, 35% Aluminium.
		
Note: torpedo wake is much more visible at 40Kn, since the air consuption rises from 13.65atu at 30Kn, to 24.3atu at 40Kn.