Ruhrstahl/kramer PCI400x Fritz X
Designed by Dr. Max Kramer, the PC 400X was on of the world's first two operational anti-shipping missiles. Built around the standard PC 1400 armour piercing bomb, the Fritz X was steered by radio control (via tail mounted spoilers) onto the target. From a launch altitude of 19,680 ft (6,000 m), the weapon was capable of piercing 5½ in (130 mm) armour plate.
Ruhrstah/kramer PCI400X Fritz X 
- TYPE: Steerable, free-fall, armour piercing bomb
- WEIGHT: Operational 3,454 lb (1,570 kg) Warhead 704 lb (320 kg)
- DIMENSIONS: Span across fins 4 ft 5'/8 in (1.35 m) length 10 ft 8'/8 in (3.26 m) Body Diameter 1 ft 10in (0.56 m)
- PERFORMANCE: Maximum speed 630 mph (1,035 km/h) after 26,240 ft (8,000 m) fall. Minimum launch altitude 13,125 ft (4,000 m). Minimum range up to 2.8 mls (4.5 km) when launched from 13,125 ft (4,000 m) Maximum range mls (9.0 km)when launched from 26.240ft (8,000 m)