NOAA Ship Rainier completes year’s surveys along Alaskan archipelago, heads home to Newport   2 comments

NOAA Ship Rainier is due to arrive at its homeport in Newport, Ore., on November 1, completing the ship’s 2012 hydrographic survey season. (Watch Rainier’s progress on NOAA’s Ship Tracker.) This survey season, Rainier departed Newport on May 17 and spent her summer mapping 604 square nautical miles of the ocean floor in Alaska, stretching from Kodiak to the Shumagin Islands, along the Alaskan archipelago.

Rainier has a long 1,769 nautical mile trip back to homeport in Newport, Oregon.

“We completed our last survey on October 24, and began the long 1,769  nautical mile trip back to Oregon,” said Rainier’s commanding officer, Cmdr. Richard Brennan. “The crew put a lot of great effort into their work, some of it under challenging weather conditions.”

Rainier and her four smaller survey vessels use multibeam echo-sounders to measure the depth of the ocean along her path, collecting millions of measurements. More than half of the area surveyed by Rainier this summer had never been surveyed before, leaving large sections of nautical charts void of ocean depth measurements. Commercial shippers, passenger vessels, and fishing fleets need updated charts, which NOAA’s Office of Coast Survey will produce with the multibeam’s precise and accurate measurements.

“Simply put, we have better maps of the moon than of our oceans,” said Rear Adm. Gerd Glang, director of Coast Survey. “Much of our knowledge of U.S. coastal seafloors dates from eras when ocean commerce was more limited, especially in Alaska.”

“At a time when Alaskan waterways are facing unprecedented demands from maritime commerce, Rainier is acquiring the data for navigational charts that are the foundation of the marine transportation system,” Glang explained.

The 231-foot Rainier, one of the most modern and productive hydrographic survey platforms of its type in the world, is named for Mount Rainier, a massive volcanic cone rising 14,410 feet above sea level in Washington. At the time the ship was commissioned, in 1968, vessels of this class were named for geological features. Rainier underwent a major repair period from Nov. 2009 to Jan. 2011, when new systems and equipment were installed.

The ship’s sophisticated seafloor mapping systems allow researchers to acquire hydrographic data that is used to update the nation’s nautical charts. Rainier carries four survey launches that survey shallow, near-shore waters.

Rainier’s scientists, survey technicians, NOAA Corps officers, and crew bring a wide range of navigational and hydrographical expertise to the mission. Rainier has a total complement of 52 people: 12 NOAA Corps commissioned officers, 11 engineers, 14 deck/boatswains, 9 hydrographic survey technicians (in addition to the officers, who are all hydrographers), four stewards, and two electronic technicians.

The ship is part of NOAA’s fleet of research and survey ships operated by NOAA’s Office of Marine and Aviation Operations.

One of Rainier’s projects for 2012 was four surveys in the Shumagin Islands, constituting 2083.2 linear nautical miles of survey lines, and 112.85 square nautical miles of seafloor – most which were never surveyed before.

Posted October 30, 2012 by NOAA Office of Coast Survey in Hydrographic surveys, Rainier

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2 responses to “NOAA Ship Rainier completes year’s surveys along Alaskan archipelago, heads home to Newport

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  1. It had already been surveyed by lidar, and RAINIER’s surveys had their inshore limit defined by the extents of good lidar coverage. The new charts will reflect a combination of both data sources.

  2. Is the coastal area of Simeonoi Island surveyed by bathymetric lidar, or will it be done in future years?

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