The I07N cruise started in Durban, South Africa on April 23rd 2018 and ended in Goa, India, on June 6th 2018. The cruise consisted of two legs with a mid-point port stop in Victoria (The Republic of Seychelles) from May 15th 2018 to May 19th 2018. Twenty-six scientists from 15 different institutions were engaged in surface and full-depth water column measurements, surface water measurements form the scientific seawater supply line, and deployment of profiling (Argo) floats and drifters en route. During the cruise 126 CTD casts (including 2 test casts) were carried out, and 15 Argo floats, 10 SVP drifters, and 3 wave buoys were deployed. The CTD/Rosette operations were carried out using 24, 12-L bottles. The 2018 I07N research cruise was jointly funded by the USA agencies: National Oceanic and Atmospheric Administration (NOAA) and National Science Foundation (NSF). The cruise was led by NOAA Atlantic Oceanographic and Meteorological Laboratory and NOAA Pacific Marine Environmental Laboratory. Numerous US academic institutions as well as Japan Agency for Marine-Earth Science and Technology (JAMSTEC) took part in the cruise.

Hydrographic measurements were carried out along the I07N section in the western Indian Ocean in April-June 2018 under the auspices of the Global Ocean Ship-Based Hydrographic Investigation Program (GOSHIP). The unique aspect of the 2018 I07N research cruise is that it was the first reoccupation of the I07N section since 1995. The section was not revisited for about 23 years because of the rise of piracy in the region.

Carbon Data
CTD and other hydrographic data
Section designation: I07N
Chief Scientists: Denis Volkov and Viviane Menezes
Dates: 23 Apr 2018 to 6 June 2018
Ship: NOAA SHIP Ronald H. Brown
Ports of call: Durban South Africa to Victoria, Seychelles to Mormugao, India
Stations: 128
Geographic boundaries 30°S to 18°N by 31°E to 73.8°E