Far from the largest crane Demag builds, it is certainly one of the largest I have seen come through the Port of Halifax. It appears to be an AC 500-8 model: 500 tonne capacity, 56m boom + 90m boom extension with 16 x 8 x 14 drive train, and a short 17.1m carrier length.
It was lashed down on its own rail car and may have made it on this evening's train, heading west. Its hydraulic extension boom is presumably travelling independently, possibly by truck.
Since 2016, parent company Terex has re-introduced the Demag (Deutsche Machinenbau AG) brand. Terex also builds smaller cranes under the Terex brand name.
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