NOAA Ship Thomas Jefferson returns to survey approaches to Chesapeake Bay during the 2020 field season

NOAA Ship Thomas Jefferson

By Hydrographic Assistant Survey Technician Sophia Tigges

For the first portion of the 2020 field season, NOAA Ship Thomas Jefferson surveyed approaches to Chesapeake Bay. Thomas Jefferson’s 2020 field season consisted of two 45-day “bubble” periods. A “bubble period” is the time a ship closes to personnel transfer while they shelter in place for seven days and undergo COVID-19 testing per NOAA’s Office of Marine and Aviation Operation’s COVID-19 protocol to mitigate exposure. The ship spent the entire first bubble working off the coast of North Carolina and Virginia for this project. These surveys served as a continuation of the ship’s work in the area in the 2019 season.  (To learn more about Thomas Jefferson’s work in this area last year, read the 2019 post titled, “NOAA Ship Thomas Jefferson tests innovative DriX unmanned surface vehicle.”

Continue reading “NOAA Ship Thomas Jefferson returns to survey approaches to Chesapeake Bay during the 2020 field season”

Coast Survey Spotlight: Meet James Moy

James Moy with chart in background

Ever wonder what it’s like to be a member of the NOAA Coast Survey team? We 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.


James Moy, Cartographer

“As a cartographer, I consider it a success if the updates to a chart are accurate and justified, reviewed by another with little or no revisions, and is deemed useful and safe for the public.

Continue reading “Coast Survey Spotlight: Meet James Moy”

NOAA bathymetric data helps scientists more accurately model tsunami risk within Barry Arm

Barry Glacier, Alaska.

In May of 2020, local geologists identified a steep, unstable slope that has the potential to become a tsunami-generating landslide in Barry Arm, a glacial fjord 60 miles east of Anchorage, Alaska. With documented cases of tsunami-generating landslides in Alaska including Lituya Bay in 1958 and Taan Fjord in 2015, this new hazard immediately caught the attention of state and federal partners who quickly joined forces to quantify the risk to those living and boating in Alaska’s Prince William Sound, specifically the communities of Whittier, Valdez, Cordova, Tatitlek, and Chenega.

Continue reading “NOAA bathymetric data helps scientists more accurately model tsunami risk within Barry Arm”

Nautical charts reflect alternate route along Gulf Intracoastal Waterway

Portion of Chandeleur Sound Gulf Intracoastal Waterway alternate route.

In anticipation of the temporary closure of the Gulf Intracoastal Waterway (GIWW)’s Inner Harbor Canal Lock, the Office of Coast Survey released three updated NOAA electronic navigational charts (NOAA ENC®) reflecting the Chandeleur Sound Alternate Route and the addition of 97 Aids to Navigation (ATON). The updated charts include US5LA24M, US4LA34M, and US4MS12M and can be viewed in NOAA’s ENC Viewer or downloaded from NOAA’s Chart Locator.

Continue reading “Nautical charts reflect alternate route along Gulf Intracoastal Waterway”

NOAA Coast Survey’s new strategy supports charting mandates and broader seafloor mapping

This week, NOAA’s Office of Coast Survey released the Mapping U.S. Marine and Great Lakes Waters: Office of Coast Survey Contributions to a National Ocean Mapping Strategy. This report is part of NOAA’s ongoing commitment to meet core surveying and nautical charting mandates while supporting broader needs to fill gaps in seafloor mapping and environmental sciences.

Continue reading “NOAA Coast Survey’s new strategy supports charting mandates and broader seafloor mapping”

NOAA releases prototype surface current forecast data for industry testing

portable pilot unit on the bridge of a ship

Prototype data for surface current forecasts in the International Hydrographic Organization (IHO) S-111 format is now available for testing through the NOAA Big Data Program. In June, NOAA announced that we were preparing surface current forecast data for dissemination trials. Now that these data are available, industry can integrate these prototype data into different types of navigation software systems such as portable pilot units and under keel clearance systems. By making these data more accessible, more machine-to-machine readable, and more integrated, NOAA aims to amplify the power of our navigation data for users across the maritime industry.    

Continue reading “NOAA releases prototype surface current forecast data for industry testing”

Nautical Chart Manual guides cartographers for 100 years

By John Macek

This July marks the 100th anniversary of the Office of Coast Survey’s Nautical Chart Manual. First published on July 10, 1920, as Special Publication No. 66, under the title “RULES AND PRACTICE RELATING TO CONSTRUCTION OF NAUTICAL CHARTS”, the 34- page pamphlet codified the essential guidelines to be used by cartographers of the U.S. Coast and Geodetic Survey.

Continue reading “Nautical Chart Manual guides cartographers for 100 years”

United States Coast Pilot® covering the Pacific now in two volumes

Coast Pilot 10 cover

What is currently known as United States Coast Pilot® 7 was first published in 1903. The official published name was United States Coast Pilot—Pacific Coast California, Oregon and Washington. Content and information was inclusive of those three states. After Hawaii became a state in 1959, information on the Hawaiian Islands—including the long string of islands and atolls out to Midway Island—was incorporated into the newly titled United States Coast Pilot 7—Pacific Coast California, Oregon, Washington and Hawaii. In 1988, information originally maintained by the National Geospatial-Intelligence Agency under Publication 126 on the remote Pacific Islands (American Samoa, Guam and the Marianas) was added as a new chapter.

Continue reading “United States Coast Pilot® covering the Pacific now in two volumes”