NOAA and USGS collaborate to fulfill important agency missions in offshore areas along the West Coast

This summer, the Coastal and Marine Geology Program of the U.S. Geological Survey (USGS) and NOAA’s Office of Coast Survey together ran an interagency ocean mapping project across several large portions of the Cascadia Margin, offshore of California, Oregon, and Washington states.
This collaboration,  conducted aboard the NOAA Ship Rainier, used hydrographic surveying equipment to collect swath bathymetry, backscatter intensity data, and full water column data within the project areas. The high-resolution geospatial data acquired will provide key baseline data for targeted USGS studies to improve hazard assessment and forecasting for marine geohazards offshore of northern California, Oregon, and Washington.  NOAA will also use the data to update nautical charts for safe navigation in the region. Continue reading “NOAA and USGS collaborate to fulfill important agency missions in offshore areas along the West Coast”

NOAA Ship Thomas Jefferson presents survey work to Puerto Rico South Coast stakeholders

By Cmdr. Chris van Westendorp, Commanding Officer of NOAA Ship Thomas Jefferson

Almost one year following the passage and destruction of Hurricane Maria, NOAA Ship Thomas Jefferson has returned to Puerto Rico. Following the storm, Thomas Jefferson deployed in September 2017 for hydrographic hurricane response work in Puerto Rico and the U.S. Virgin Islands (PR/USVI). The ship and crew surveyed 18 individual port facilities to ensure safety of navigation and help re-open the region for maritime commerce. Thomas Jefferson’s second major project of 2018 has brought the ship back to Puerto Rico from August to November, conducting follow-up survey work along the north and south coasts. Continue reading “NOAA Ship Thomas Jefferson presents survey work to Puerto Rico South Coast stakeholders”

NOAA and Coast Guard survey shallow channels in eastern Chesapeake Bay to update aids to navigation

Echoboat ASV surveys in the Pocomoke River Channel to investigate possible shoaling.

By Lt j.g. Patrick Debroisse

The area of the Chesapeake Bay along the Eastern Shore of Maryland is one of our nation’s treasures. Home to unique underwater grasses, fish, and shellfish, this complex transition from river to sea is also home to millions of tons of sediment delivered annually from eroding land and streams. Recreational boaters, fisherman, and cruising vessels are keenly aware of the shifting sands and sediment deposits in these shallow waters and rely on aids to navigation (ATON) — a system of beacons and buoys — to travel safely to and from the harbors and docks along the shoreline.
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Crew of NOAA Ship Rainier surveys Everett, Washington, to update charts

By Lt. j.g. Michelle Levano

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RA-6 in Elliott Bay, downtown Seattle. Photo Credit: Lt. Andrew Clos

As NOAA Ship Rainier underwent repairs in South Seattle, the ship’s survey launches and their crews carried out a project to update nautical charts around the Port of Everett and its approaches in Possession Sound. The boats used state-of-the-art positioning and multibeam echo sounder systems to achieve full bottom coverage of the seafloor.
The ports of Seattle, Tacoma, and Everett have experienced an increase in vessel traffic and capacity within the last decade. The Port of Everett serves as an international shipping port bringing jobs, trade, and recreational opportunities to the city. Across Possession Sound, Naval Station Everett is the homeport for five guided-missile destroyers, and two U.S. Coast Guard cutters. The data collected from this project will support additional military traffic transiting to and from Naval Submarine Base Bangor in addition to the Washington State Ferries’ Mukilteo/Clinton ferry route, commercial and tribal fishing, and recreational boating in the area. Continue reading “Crew of NOAA Ship Rainier surveys Everett, Washington, to update charts”

NOAA surveys Lake Champlain for improved flood modeling and mitigation strategies

At the request of the NOAA Great Lakes Environmental Research Lab (GLERL), NOAA’s Office of Coast Survey deployed a survey team and a new autonomous surface vehicle (ASV) to gather hydrographic data in and around the narrow causeway inlets that dot the Lake Champlain basin in Vermont. GLERL will use the data to improve flood forecast models and analyze flood mitigation strategies in the Lake Champlain-Richelieu River system as part of a U.S. and Canada study led by the International Joint Commission.
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Coast Survey spotlight: Meet Starla Robinson

Starla Robinson served as a crew member on the NOAA Ship Rainier. Photo credit: Lt. Damian Manda, NOAA Corps

Ever wonder what it’s like to be a member of the NOAA Coast Survey team? We will use the Coast Survey spotlight blog series as a way to periodically share the experiences of Coast Survey employees as they discuss their work, background, and advice.


Starla Robinson, Physical Scientist

The work we do has real value and every sounding takes a team of professionals from multiple disciplines. I like being a part of something greater.

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From seaports to the deep blue sea, bathymetry matters on many scales

By Rear Adm. Shep Smith, director of the Office of Coast Survey

On Thursday, June 21, we celebrate World Hydrography Day. This year’s theme—Bathymetry – the foundation for sustainable seas, oceans and waterways—is very timely as many hydrographic organizations worldwide are focusing on bathymetry at local and global scales. While we work to perfect real-time data and high-resolution bathymetry for ports, we are still working to build a foundational baseline dataset of the global seafloor. Our work at both scales have implications for the local and global economies.
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New NOAA precision navigation program increases safety, efficiency for maritime commerce

Mariners face complex decisions as ever-larger vessels make their way through congested U.S. ports.

By Capt. Liz Kretovic, deputy hydrographer of the Office of Coast Survey

Nowadays, many cars have sensors, video cameras, and other technology installed to help drivers park in tight spaces. Now imagine you are trying to parallel park a tractor-trailer on an icy hill, against a strong crosswind, with millions of dollars of products that depend on your precise execution. Dynamic conditions, tight spaces, and high stakes are exactly the scenario that many commercial vessels face as they move 95 percent of the United States’ foreign trade in and out of U.S. ports and waterways. In a manner comparable to the way car technology supports drivers, NOAA has launched a new program to develop the next generation of marine navigation tools that provide mariners with the information they need to safely and efficiently transport maritime commerce. This next generation of products is referred to as precision navigation.
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First U.S. federal channel using USACE survey data receives improved quality classification from NOAA

By Rachel Medley

The U.S. federal channel in the Delaware Bay is vital to maritime commerce, leading deep draft vessel traffic to and from the major ports of Wilmington, Delaware,  Philadelphia, Pennsylvania, and Camden, New Jersey. To navigate this federally maintained waterway safely and efficiently, mariners rely on the surveyed depths displayed on nautical charts. The U.S. Army Corps of Engineers (USACE) Philadelphia District regularly surveys this area, utilizing sophisticated techniques and equipment to map the depths of the seafloor. NOAA’s Office of Coast Survey, in turn, adds quality classifications to these channel depths and displays them on the nautical chart.
The portion of the federal channel from Newbold Channel Range down to the mouth of the Delaware Bay is the first waterway in the U.S. to have an improved quality classification assigned to USACE survey data—category of zone of confidence (CATZOC)  A2. Improving survey quality and upgrading the CATZOC classification allows operators to accommodate smaller margins of error while still ensuring that navigating maritime approaches and constrained environments remain safe. These decreased tolerances allow ships to maximize their loads, ultimately increasing inbound and outbound cargoes.
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