Fire engulfed an area in the port of Barcelona after an out-on-control ferry slammed against a quay crane.
Workers fled from the scene as the crane keeled over, crashing into fuel tanks below, causing a number of explosions.
A dramatic video of the collision was posted onto Facebook, which showed the ferry being swept in by strong winds.
Media reports say that the Excellent, operated by Italian firm Grandi Navi Veloci, was carrying 420 passengers and that no one was hurt.