The upper Great Lakes (Erie, Huron, Michigan, and Superior) offer good navigation depths, but navigation is limited by the waterways between the lakes and by ice in winter. Lawrence / Great Lakes system, offers no significant navigable river system as the Appalachian Mountains are just a few hundred kilometers inland. The Eastern Seaboard, except for the St.The North American continent, unlike Europe and China, is not very prone to inland waterway distribution and is composed of three major maritime facades: This does not necessarily mean that the port has the physical capacity to accommodate those ships since it could be lacking berth space, turning basins, equipment (cranes), or yard space to do so. The above map illustrates the channel depth of major container ports in North America as well as the potential containership capacity such a depth may accommodate.
A core component of this access is related to the depth of the waterway system, the port access channels, and, more practically the berth depth. Port locations and sites are preliminarily constrained by the maritime access they can provide.
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