For GP17-OCE, a Scripps Institution of Oceanography (SIO) STS 36-place yellow rosette and bottles were used. The rosette was loaded on Revelle in early November 2022. The rosette and bottles were built before P06 2017, making this the fifteenth time this package has been deployed. A steel bridle was added to the top of the rosette to adapt to the winch head. The bottles were made with new PVC, with new non-baked o-rings and electro-polished steel springs. Springs within the Bullister-style Niskin bottles were electropolished stainless steel. Bottle lanyards were made from 300-pound monofilament. In addition to the standard CTDO package on GO-SHIP cruises, a UVP, oxidation reduction potential (ORP), and turbidity sensor were mounted on the rosette. During the cruise, a handful of problems were encountered. These are described in the cruise report prepared by the Ocean Data Facility (ODF) (see Supplemental Files).
ODF rosette casts were performed with a package consisting of a 36-bottle rosette frame, a 36-place carousel, and 36 Bullister style Niskin bottles with an absolute volume of 10.6 liters (L). Underwater electronic components primarily consisted of a SeaBird Electronics housing unit with Paroscientific pressure sensor with dual plumbed lines where each line has a pump, temperature sensor, conductivity sensor, and exhaust line. A SeaBird Electronics membrane oxygen sensor was mounted on the "primary" line. A reference thermometer, RINKO oxygen optode, transmissometer, chlorophyll-a fluorometer, and altimeter were also mounted on the rosette. UVP, ORP, and turbidity instruments were deployed with the CTD/rosette package and their use is outlined further in the cruise report.
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