The old lakers were typically 730 feet long. The new ones are 740 feet long. They still fit in the lock system.
The hull designs were optimized for fuel efficiency, pushing through the water with less energy. Also they are faster, not maybe in the canal, but when you're in Lake Ontario, Lake Superior or Lake Erie you can go faster so we go a bit faster and obviously we use fewer greenhouse gases. Our emissions are almost zero. We have scrubbers in all our new ships so we're scrubbing out all the sulphur emissions.