Humpback whale:

Date/time (local)OccurrenceLatitudeLongitudeNotes
05/18/15 15:47:32Detected41.7188-69.6932
05/18/15 20:47:32Possibly detected41.6938-69.5604


Date/time (local)LatitudeLongitudeNotes
05/18/15 03:47:3241.8625-69.7802400-300 Hz downsweep in panel 4?
05/18/15 07:47:3241.8599-69.8497Tones in panel 2 could be hw, but not enough to be convincing.
05/18/15 11:47:3241.7870-69.8262Several hw-like notes, but the pattern is not coherent enough.
05/18/15 17:47:3241.6926-69.6246Period without rudder noise. Seemingly quiet (but could be quite loud, too).