Williams-Mystic S’20 Over the Puerto Rico Trench

On our third full day aboard the SSV Corwith Cramer, we are heading toward the Puerto Rico trench on calm water under a sky full of bright stars. Students are quickly learning the onboard routines and becoming valuable members of the crew.

January 29, 2020

Greetings from Williams-Mystic S’20! On our third full day aboard the SSV Corwith Cramer, we are heading toward the Puerto Rico trench on calm water under a sky full of bright stars.

Tuesday afternoon, we held classes on deck. Professor Kelly Bushnell led a discussion on the “greenhand” (nautical terminology meaning a newbie on a ship) experience in literature, such as Herman Melville’s Redburn (1849). In the finest tradition of maritime literature, many of us are also keeping a journal of the voyage; when not on watch, you can find us relaxing on deck, pen in hand.

In our nautical science class, Captain Heather and the mates taught us to set, strike, and furl sails.  Some were so heavy it took many of us to haul the line. Throughout the days and nights, we are standing watch on deck and in the lab, to sail the ship and collect oceanographic data, respectively. Students are quickly learning the onboard routines and becoming valuable members of the crew.

In the onboard science lab, students are analyzing hourly surface samples for pH levels, microplastics, and more with the help of three assistant scientists.  We learned how use the ship’s hydrowinch to deploy scientific equipment, and each watch completed a Neuston tow yesterday to collect whatever is drifting at the very surface of the water. Sargassum is easiest to see from the ship, but tiny zooplankton also end up in our net for analysis on board.  In particular, we had some beautiful siphonophores, which Maggie from Carnegie Mellon and Casandra from Bryn Mawr reported on in class Wednesday.

Leaning over the raining of a ship, four students stare into the water at a small, cylindrical net dangling from a rope just at the water's surface
Maggie from Carnegie Mellon, Alex from SUNY Maritime, and Jade from Skidmore deploy a phytoplankton net with Assistant Scientist Grayson.

For much of Wednesday, we were accompanied by a curious minke whale. Because it was so calm, and because she was so close, we could hear her breathing and see her fin.  She showed us her underside and criss-crossed under the hull multiple times. We watched in awe.


You can follow the Cramer’s progress here:

https://www.marinetraffic.com/en/ais/details/ships/shipid:426493/mmsi:366724450/imo:8617445/vessel:CORWITH_CRAMER

Please note that vessel tracking information is NOT updated continuously and the Cramer isn’t always able to provide updated location information. (Good reception isn’t a guarantee at sea!) If you notice that the Cramer appears to be in the same location for an extended period of time, it simply means the website has not yet been updated.

You can also look back at blog posts from previous Offshore Field Seminars here: https://williamsmystic.wordpress.com/category/field-seminars/offshore-field-seminar/.