A cargo container x-ray apparatus with x-ray projector and receiver for mounting on opposite waterside legs of a crane. As the crane is already in use in transporting the containers from a vessel to a landing area, there exists little to no delay in unloading, as inspection of each container is inherent in its transport. The apparatus provides fiber optics for transmitting the x-ray images to a centralized viewing location. By providing transmission to and a large, high resolution viewing screen in a central location, the need for added personnel is negated. As each container must be conveyed by the crane, the inspection of the container takes place in transit.