The morning after the Coast Guard’s Penobscot Bay passed up the North River heading for ice breaking duty upriver, another black-hulled cutter came through. The buoy tender Katherine Walker, Keeper of the Harbor, headed north, perhaps to join ice breaking operations or to restore navigational marks knocked off station by ice flows, or both (or neither). Kate stopped at Lighted Buoy number 40 south of Constitution Island near Cold Spring and then continued on to reach Poughkeepsie by sundown. Wednesday morning finds her on the move again, heading north and passing Hyde Park. Meanwhile, Penobscot Bay is heading south towards her after spending Tuesday on ice patrol around Kingston and traveling nearly as far north as Hudson NY. Still no ice to be seen further south on the North River where warm temperatures brought pea soup fog on Wednesday morning.