Home » Projects » Wind Farm Development: Atlantic Ocean, Offshore Rhode Island

Wind Farm Development: Atlantic Ocean, Offshore Rhode Island

Deepwater Wind, LLC

From 2009 to 2017, OSI provided extensive survey and data analysis services in support of all phases of the design, permitting, and construction of five wind turbines, inter-array, and export cables for Deepwater Wind’s Block Island Wind Farm – the first U.S. offshore wind farm. See the table below for list of tasks.

Year:Task:
2009Reconnaissance level multi-sensor geophysical and geotechnical investigations to assess the construction feasibility and determine the presence of any "fatal flaws" (shipwrecks, unmanageable geologic conditions), as part of the initial project design phase.
2010-2011Data analysis, reporting and meeting preparation and attendance supporting the development of geophysical and archaeological survey plans to meet BOEM and state standards and permitting requirements.
2011Detailed multi-sensor (multibeam echo sounder, side scan sonar, magnetometer, subbottom profiler) geophysical and geotechnical investigations to characterize and evaluate seafloor and subbottom conditions to address federal and state marine archaeological, benthic, and shallow hazard conditions. Surveys were conducted within the area of potential impact for the five planned turbines, as well as the inter-array and export cable corridors to Block Island and the transmission cable corridor between Block Island and the Rhode Island mainland.
2012-2013Supplemental multi-sensor geophysical surveys to characterize seafloor and subsurface conditions at several alternative landfalls in Block Island and Narragansett, Rhode Island.
2015Jet probing and additional multibeam hydrographic surveys along cable routes as part of final cable installation design.
2015Data analysis and consultation for acoustic coring operations to characterize deeper stratigraphy at turbine sites prior to foundation installation.
2016Multi-sensor geophysical surveys and navigation services throughout the cable installation process.
2017Multibeam echo sounder, side scan sonar, and ROV inspections of several areas along the installed cable route to document post cable installation conditions.

Related Projects


Searsport Fig. 2

Archaeological Investigation: Searsport, Maine

Ocean Surveys conducted a marine geophysical investigation in Searsport Harbor, Maine in support of a U.S. Army Corps of Engineers (New England District) channel deepening project. The investigation was designed to provide information both for marine archaeological assessment of the ...
Read More
Beach Profiling: Coastal New Jersey

Beach Profiling: Coastal New Jersey

OSI has supported various U.S. Army Corps of Engineers Districts' coastal engineering missions since 1994 with beach profiling surveys. In the vicinity of Ocean City, New Jersey, three-dimensional data were acquired using a combination of topographic, mini sea-sled, and automated ...
Read More
Hydrographic Services Terrestrial Laser_4

Breakwater Inspection: Portage, Indiana

Ocean Surveys performed multibeam hydrographic and vessel-mounted laser scanning surveys of the Burns Harbor Breakwater in Portage, Indiana. The survey data enhanced the District's ability to assess existing breakwater conditions both above and below the water surface, as well as ...
Read More
Mackinac Fig. 1

Bridge Scour Investigation: Mackinac, Michigan

The Mackinac Bridge is among the 20 largest suspension bridges in the world. It has a total length of approximately five miles and a main span of 3,800 feet. As part of a scour investigation, Ocean Surveys performed a multibeam hydrographic survey ...
Read More
Navigable Waterways Fig. 8

Charting Navigable Waters

OSI was a subcontractor to the prime on NOAA’s very first contracted hydrographic survey.  Since 1999, OSI has acted as a prime contractor surveying thousands of square nautical miles of seafloor on behalf of NOAA (see table below).  In all ...
Read More
Coastal Monitoring: Offshore Bethany Beach, Delaware

Coastal Monitoring: Offshore Bethany Beach, Delaware

In 1988 several pieces of artillery shells were discovered on Bethany Beach and Sea Colony Beach in Delaware. A recent beach replenishment project used sand recovered from a borrow area within the bounds of a historic anti-aircraft target range operated ...
Read More
Expanding Navigable Waterways: Savannah, Georgia

Expanding Navigable Waterways: Savannah, Georgia

A geophysical survey investigation in the Savannah River Entrance Channel was conducted by Ocean Surveys for the U.S. Army Corps of Engineers. The investigation was specifically designed to complement and expand upon subbottom data that was previously acquired by OSI ...
Read More
Whiskey Island Fig. 3

Marsh Restoration: Whiskey Island, Louisiana

Integrated hydrographic/geophysical surveys and a vibratory coring program were completed in the Gulf of Mexico in the waters offshore of Whiskey Island, Louisiana for the LDNR and The United States Environmental Protection Agency. OSI completed these investigations under subcontract to ...
Read More
Greenland Fig. 4

Pier Inspection: Thule, Greenland

The U.S. Air Base in Thule, Greenland is the US Military’s northernmost installation with the world's northernmost deep-water port.  The port is open for only a few months each year during which time all bulk cargo and fuel bound for ...
Read More
Power Generation and Distribution: Puerto Cortes, Honduras

Power Generation and Distribution: Puerto Cortes, Honduras

Ocean Surveys performed a multi-disciplined marine investigation including hydrographic, geophysical, oceanographic, meteorological and biological studies in the waters off Puerto Cortes in the Gulf of Honduras. This investigation was conducted to collect scientific data in support of the design of ...
Read More
Reservoir Safe Yield Analysis: Lynchburg, Virginia

Reservoir Safe Yield Analysis: Lynchburg, Virginia

To support a reservoir siltation analysis of the Pedlar Reservoir, Ocean Surveys performed a detailed hydrographic survey and calculated the existing capacity. Following completion of the survey, a Digital Terrain Model (DTM) of the reservoir bottom surface was created and ...
Read More
Submarine Cable Fig. 2

Submarine Cable and Pipeline Routing: Massachusetts Bay

Ocean Surveys, Inc. initially performed a desktop study to compile geologic, oceanographic, sediment chemistry, and marine activity background information supporting the feasibility assessment of the project. This research was followed by a reconnaissance level marine geophysical survey along an alignment ...
Read More
Submarine Outfall Placement: Offshore of Sosua, Dominican Republic

Submarine Outfall Placement: Offshore of Sosua, Dominican Republic

Ocean Surveys conducted an oceanographic and geophysical data collection program in near shore waters off of Sosua, Dominican Republic, to support a joint project between the Dominican government and the World Bank. The project required a detailed investigation of the ...
Read More