60 Centimetre
These were developed in the late 1930s, with a 60 centimetre diameter parabolic glass reflector and was powered by an 8 kilowatt generator. The lamp output was rated at 135 million candelas, and it had a detection range of about 5 kilometres for targets travelling at an altitude of 1500 meters. With the beam dispersed, this reduced to about 3.2 kilometres. It required a crew of three and could be transported using a single axle Special trailer 51.
Typical tactics were to sweep the search light in an S-shaped pattern along the targets' expected course with the beam dispersed, once the target was detected, it was then tracked using the focused beam.
The 60 cm searchlights were not powerful enough to reach the allied bomber streams later in the war, so were typically employed organically with 20 mm and 37 mm low-level flak guns.
Read more about this topic: German Searchlights Of World War II