Do not know where you live but I worked in a Shipyard in South Mississippi That had Cranes which picked up Modules which weighed 100 tons. Most were in the range of 50 to 70 tons the limiting factor was the range of the lift away from the crane. The further away from the Crane the less the load limit but the Cranes were rail mounted so they could traverse and carry the load anywhere. We had one Crane capable of handling 500 tons, a real monster. These are all located at Pascagoula Mississippi. Most were imported from Germany.