An employee was using a transport to move a ship component alongside a vessel. The employee was controlling the transport with a hand-held control, walking backward, watching the transport to make sure it had enough room to get by. At the same time, another employee was clearing gang boxes and material out of the transport's way using a forklift. After backing up with a load, the forklift began to move forward, and its back left tire struck the transport operator's right leg. The transport operator suffered a shattered tibia.