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Dive R1781 Highlights Primary Node PN1D

This dive at Primary Node PN1D was in support of the cable ship the Dependable. The ROV ROPOS supported the installation of a 17 km extension cable extending to the Oregon Shelf Site. Huge ling cod appear to have made the node their "house", while snails (with yellow egg stalks), sea anenomes, and a variety of fish are also thriving on this "reef". Video credit: NSF-OOI/UW/CSSF; Dive R1781; V14.  

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Primary Node 3A at the Base of Axial Volcano

Primary Node 3A is installed at the base of Axial Volcano and connected to the backbone cable, which is connected to a terrestrial shore station in Pacific City, Oregon. This node provides 10,000 volts of power and 10 Gbs bandwidht for real-time communication. The node is located >300 miles off the coast. Photo Credit: Photo credit: NSF-OOI/UW/CSSF

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Testing Primary Node 3B

Spare commissioning support hardware is plugged into Primary Node 3B while it is fully powered up from >350 miles away at Pacific City, Oregon. A tool basket on the left holds the hardware, as well as other equipment that may have been needed for testing. The manipulator arms of ROPOS are in the foreground, waiting for the test to be completed.

Photo: OOI/UW/CSSF

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OOI RSN Primary Node 3A PN3A

OOI RSN Primary Node 3A (PN3A) on the aft deck of the TE SubCom Dependable. Cable segment 6 is on the port sheave (to the right in this photo) and cable segment 7 is on the center sheave (to the left in this photo).

–Photo by Brian Ittig

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Primary Node 5A

Primary Node 5A is shown here on the deck of the TE SubCom Dependable, with the spare Science Interface Assembly (SIA) installed in the node for testing. Prior to deployment, this SIA will be transferred to the spare primary node frame that is also carried onboard. PN5A, when installed, will have no SIA since it is a placeholder node for potential future expansion.

–Photo by Brian Ittig

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OOI RSN Primary Node 1C

OOI RSN Primary Node 1C, shown here on the deck of the TE SubCom Dependable, nearly ready for deployment. Cable segments 3 and 4 are being paid out on either side of the Node.

–Photo by Cecile Durand

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