OOI's Coastal Suface Buoy being deployed at the Pioneer Array from the R/V Atlantis.

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OOI's Coastal Suface Buoy being deployed at the Pioneer Array from the R/V Atlantis. (Photo by Sheri N. White, Woods Hole Oceanographic Institution)

Pioneer Array Surface Mooring

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Pioneer Array Surface Mooring.

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Coastal Surface Moorings

Coastal Surface Moorings will be used at the Pioneer Array and at the Endurance Array. The moorings are capable of supporting instruments at the air-sea interface, on the instrument frame at 5 m depth, and on the multifunction node (MFN) on the seafloor.

Enabling Technology
The enabling technology for the Coastal Surface Moorings, which distinguishes the design from the Global Surface Moorings, is the incorporation of Electro-Mechanical (EM) stretch hose sections. This design is optimal for shallow water applications where it is necessary to provide electrical paths to seafloor equipment while minimizing the risk of cable hockle by maintaining positive tension on the entire EM section. The design can be tuned for water depths from 50 to 500 m.

Surface Buoy
At the top of the mooring is a Coastal Surface Buoy with a tall, low-drag tower and deep keel. The Coastal Surface Buoy is equipped with the same power system as the Global Surface Buoy. It will include wind and solar power generators as well as energy storage in Absorbed Glass Mat (AGM) lead acid batteries.

Multi-Function Node
Coastal Surface Moorings are terminated at the seafloor by a multi-function node (MFN) that provides data and power ports for benthic instrumentation. MFNs may incoporate docking stations at their base for AUVs.