Category: bathymetry

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NOAA navigation response team locates sunken vessel before nor’easter strikes

Multibeam Imagery of the vessel

On March 12, 2018, NOAA Coast Survey’s navigation response team 5 (NRT5) located the T/V Captain Mackintire, an 80-foot towing vessel that sank off the coast of Kennebunkport, Maine. The U.S. Coast Guard requested assistance finding the vessel, citing concerns of environmental hazards due to an unknown amount of fuel remaining onboard.
Continue reading “NOAA navigation response team locates sunken vessel before nor’easter strikes”

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NOAA surveys for recreational boat traffic safety in Tampa Bay

Multibeam echo sounder coverage. Credit: NOAA

NOAA’s navigation response team 2 (NRT2), homeported in Fernandina Beach, Florida, conducted a survey around the Sunshine Skyway Bridge, which spans Tampa Bay. The U.S. Coast Guard (USCG) and additional members of the Tampa Bay Harbor Safety Committee requested the work and expressed interest in establishing alternate routes for recreational boating traffic. Alternative routes will alleviate increasing congestion where the main ship channel passes beneath the bridge. This area is naturally restrictive to navigation and, as a result, there have been multiple accidents and near accidents here in the past. Continue reading “NOAA surveys for recreational boat traffic safety in Tampa Bay”

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NOAA Office of Coast Survey wraps up a busy 2017 hurricane season

The 2017 Atlantic hurricane season was powerful, with the strongest storms occurring consecutively from late August to early October. The sequential magnitude of four hurricanes in particular—Harvey, Irma, Maria, and Nate—made response efforts challenging for NOAA’s Office of Coast Survey. Coast Survey summarized this season’s response efforts along with the efforts of NOAA Ship Thomas Jefferson (operated by NOAA’s Office of Marine and Aviation Operations) in the following story map. Continue reading “NOAA Office of Coast Survey wraps up a busy 2017 hurricane season”

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Echo sounder encounter: NOAA Ship Rainier finds uncharted shipwreck

By Katy Pridgen

In late spring, while surveying off the coast of Long Island in Kodiak, Alaska, NOAA Ship Rainier found an uncharted shipwreck. Although rocks around the shipwreck were previously charted, this sunken vessel is a new feature. What made the find unique was how the top of wreck’s mast resembled a yellow light at the water’s surface. The Rainier crew fondly nicknamed it “ET’s finger.” Continue reading “Echo sounder encounter: NOAA Ship Rainier finds uncharted shipwreck”

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Have a question for NOAA Coast Survey? Meet our “Answer Man”

By Nick Perugini

Nick PeruginiAs the nation’s nautical chartmaker, NOAA Office of Coast survey serves a wide range of customers ranging from recreational boaters and operators of cargo ships, to historical chart enthusiasts. Customers throughout the world send us questions, comments, and also chart discrepancy reports, letting us know they found an error on a chart. As the Coast Survey “Answer Man,” I manage this communication, including Coast Survey’s response. Customers submit inquiries through our Inquiry and Discrepancy Management System (IDMS) database. Continue reading “Have a question for NOAA Coast Survey? Meet our “Answer Man””

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NOAA Ship Rainier concludes it’s 2017 survey of Deer Passage, Alaska

The total area surveyed by Rainier in the Cold Bay and King Cove Vicinity during the 2017 Field Season, complied by Hydrographic Senior Survey Technician Gahlinger.

NOAA Ship Rainier has been diligently surveying Deer Passage in the vicinity of Cold Bay and King Cove, Alaska, for the past month.
This navigationally significant area between Unga Strait and Sanak Island provides the only protected route for vessels transiting between the Gulf of Alaska, the very busy Unimak Passage, and the Bering Sea beyond. Deer Passage is heavily trafficked by fishing vessels, coastal freight traffic, and Alaska Marine Highway System ferries, and serves as an alternate route for deep-draft vessels on Trans-Pacific routes between North America and Asia. While in the area, Rainier observed particularly heavy use of the waterway by vessels engaged in local and Bering Sea fisheries, and towing vessels supporting remote Alaskan communities with barge service.
Continue reading “NOAA Ship Rainier concludes it’s 2017 survey of Deer Passage, Alaska”

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NOAA positions personnel and survey assets in preparation for Hurricane Irma

Projected path of Hurricane Irma as seen in nowCOAST™.

As Hurricane Irma approaches Puerto Rico as a Category 5 storm, NOAA is positioning personnel and hydrographic survey assets to help speed the resumption of shipping post storm. In the wake of a hurricane, NOAA’s personnel and survey assets provide essential information when ports need to quickly but safely re-open, limiting significant economic losses caused by prolonged disruptions to the maritime transportation system. Continue reading “NOAA positions personnel and survey assets in preparation for Hurricane Irma”

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Surveying, rescue drills, and an open house—NOAA Ship Rainier has been busy!

by ENS Michelle Levano

NOAA Ship Rainier continues hydrographic survey operations in Chiniak Bay, near Kodiak, Alaska. As of June 1, 2017, Rainier and her survey launches have surveyed 2,025 nautical miles in the Spruce Island, Long Island, Middle Bay, Kalsin Bay, Isthmus Bay, and offshore Cape Chiniak areas. The total distance surveyed is about as long as the Mississippi River. Continue reading “Surveying, rescue drills, and an open house—NOAA Ship Rainier has been busy!”

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NOAA Ship Fairweather uses new technology to improve survey efficiency

Area surveyed by Fairweather May 30- June 10, 2017.
By ENS Peter Siegenthaler

Following the scheduled winter repair period, Fairweather is kicking off the 2017 field season in Tlevak Strait; the waterway between Dall Island and Prince of Wales Island in Southeast Alaska. This area was last surveyed between 1900 and 1939, and the lead-lines used at the time to determine depths were susceptible to omission of rocks and other features in an area. Using the latest innovations in hydrographic technology, Fairweather will be resurveying these areas with complete coverage multibeam echo sounder bathymetry. This allows Fairweather to identify any rocks or shoal features missed in prior surveys, increasing the safety for local communities, whose economies and livelihoods are dependent on maritime transportation of goods. Continue reading “NOAA Ship Fairweather uses new technology to improve survey efficiency”