The Ocean Navigator, a 216-passenger cruise ship, has been docked at Eastport’s Breakwater pier while preparing for its sailing season, which starts Wednesday in Portland, Maine, and ventures north into the St. Lawrence River and Great Lakes for much of the summer.

You can get an idea of our local tides by comparing the photo above, at high tide, with the one below. Note the difference in the angle of the gangway for an idea of how much the elevation can rise or fall in four hours or so.

Or for a similar comparison, take the two shots below.

In the fall its itinerary shifts to Fundy Bay and New England.