Harbor Charts
By clicking on Harbor Chart you should find all of the docking information that you will need. The charts list the location of each bollard and its strength, where each water line is located, the depth of the water and much more.
For a bathometric view of the Portland Harbor click the below link:
http://me.usharbors.com/explore/harbor-guide/portland-harbor
USHarbors.com is a Maine-based company connecting active coastal travelers, shoreside businesses, and local residents by providing free, printable tide charts; on-shore and marine forecasts; weather buoy data and conditions; an interactive, national coastal directory; and a steady stream of local knowledge updates.