Vancouver is in a fjord. Building artificial land is expensive because the water is deep and the currents are strong. They're aware of how to do it, because Sea

Vancouver is in a fjord. Building artificial land is expensive because the water is deep and the currents are strong. They're aware of how to do it, because Seattle's port is mostly built on top of one of the world's largest artificial islands (harbor island). The depth of the fjord is actually a strength to Vancouver, because it means they're not limited on ship draft. Seattle is.