Hello All...
The inconsistencies stated resolve themselves when the physical world is brought into play. A map of Atlantic currents accounts for much of the Pequod's course, and once that is considered, then astronomical observations allow more exact map locations. From this, one learns chapters 29, 30, and 31 occurs March 11-12, 1839. The ship crosses the equator at latitude 28 degrees West longitude.
I can provide other exact dates, latitude, longitude data on most other chapters. I presented some of this material several years ago on the old Ishmail, however interest was so low, I thought to discontinue the efforts. I have concluded most Melville scholars are more interested in waxing their philosophical hand waving points than hard data.
Incidentally, I'll assume there is no statute of limitations on responses to entries on the listserve. I want to address two entries several months ago concerning Pip and Doughboy represented as the constellations Corvus and Crater, as soon as the end of the semester permits. Undoubtedly Melville pairs Pip and Doughboy to Gemini the twins.
My position at Arizona State University has shifted from the Department of Physics and Astronomy to the School of Earth and Space Exploration. I would have guessed the change would put me out of business for a month or two, but no, it has put me out several years.
Best,
Dan Matlaga