SC 500 bomb

The SC 500 was a Sprengbombe Cylindrisch ("cylindrical explosive bomb") family of 500 kg weight general-purpose bombs used by the Luftwaffe of Nazi Germany during World War II.

Design
The bombs had three-piece drawn steel bodies with a heavy machined nose cap for armor penetration. At the other end was a base plate, just forward of which the magnesium alloy tail was tack-welded onto the body, and also bolted to the tail attachment brace. The bomb was usually filled with a mixture of 40% amatol and 60% Trotyl, but when used as an anti-shipping bomb it was filled with Trialen 105, a mixture of 15% hexogen, 70% Trotyl and 15% aluminium powder. Around the nose of the bomb could be fitted an optional kopfring - a metal ring, triangular in cross section, designed to prevent ground penetration or to stop forward momentum when hitting water (to prevent the bomb from skipping off the water). The bomb could also be fitted with a Stabo Spike which was a device that prevented the bomb from burying itself in the ground before detonation to increase its anti-personnel effectiveness (similar to the US "Daisy Cutter" fuse). The bomb was attached to the aircraft horizontally by an H-type suspension lug. It could be horizontally suspended in a bomb bay or horizontally mounted on a wing or fuselage hardpoint.

Post war ordnance
On 20 February 2024 an unexploded SC500 was found in a garden in Plymouth, England during building work; the area was evacuated for three days. The bomb was eventually removed and detonated at sea.