NOAAS Oscar Dyson

Last updated
NOAAS Oscar Dyson (R 224).jpg
NOAAS Oscar Dyson (R 224) in northern waters.
History
Flag of the United States.svg NOAA Flag.svg United States
NameNOAAS Oscar Dyson (R 224)
Namesake Oscar E. Dyson (1913–1995), Alaskan fisherman and fishing industry leader
Operator National Oceanic and Atmospheric Administration
Builder VT Halter Marine, Moss Point, Mississippi
Launched17 October 2003
Sponsored byPeggy Dyson-Malson
Acquired1 August 2004 (delivered)
Commissioned28 May 2005
Homeport Kodiak, Alaska
Identification
StatusActive
General characteristics
Type Fisheries research ship
Displacement
Length208.6 ft (63.6 m)
Beam49.2 ft (15.0 m)
Draft
  • 19.4 ft (5.9 m) (with centerboard up)
  • 30.3 ft (9.2 m) (with centerboard down)
Propulsion
  • One 2.25 MW (3,017-shp) integrated diesel-electric, 24-pulse DC SCR drive system with two 1,150-kW (1,542-hp) propulsion motors on a common shaft, two 1,360-kW diesel generators, and two 910-kW diesel generators;
  • one fixed-pitch propeller;
  • one 720-kW (966-hp) AC induction azimuthing bow thruster [3]
Speed
  • 14 knots (26 km/h) (emergency)
  • 12 knots (22 km/h) (cruising)
Range12,000 nautical miles (22,000 km)
Endurance40 days
Boats & landing
craft carried
  • 1 × 27 ft (8.2 m) survey launch
  • 1 × 22 ft (6.7 m) rescue boat
Complement24 (5 NOAA Corps officers and mates, 4 licensed engineers, and 15 other crew members), plus up to 15 scientists

NOAAS Oscar Dyson (R 224) is an American fisheries and oceanographic research vessel in commission in the National Oceanic and Atmospheric Administration (NOAA) fleet since 2005.

Contents

Construction and commissioning

An aerial view of NOAAS Oscar Dyson (R 224) underway. NOAAS Oscar Dyson (R 224) aerial view.jpg
An aerial view of NOAAS Oscar Dyson (R 224) underway.

Oscar Dyson was built by VT Halter Marine at Moss Point, Mississippi, and was launched on 17 October 2003, sponsored by Peggy Dyson-Malson, a ship-to-shore weather broadcaster for the National Weather Service in Kodiak, Alaska, from 1974 and 1999 and the widow of the ship's namesake, Alaskan fisherman and fishing industry leader Oscar E. Dyson. Delivered to NOAA on 1 August 2004, [2] the ship eventually proceeded to Kodiak, Dyson's home town, where she was commissioned into service as NOAAS Oscar Dyson (R 224) on 28 May 2005. [4]

Characteristics and capabilities

NOAAS Oscar Dyson docked in her home port of Kodiak, Alaska. 2018-09-05 NOAAS OSCAR DYSON (R 224) - IMO 9270335.jpg
NOAAS Oscar Dyson docked in her home port of Kodiak, Alaska.

Capable of conducting multidisciplinary oceanographic operations in support of biological, chemical, and physical process studies, Oscar Dyson was commissioned as the first of a class of five of the most advanced fisheries research vessels in the world, with a unique capability to conduct both fishing and oceanographic research. She is a stern trawler with fishing capabilities similar to those of commercial fishing vessels. She is rigged for longlining and trap fishing and can conduct trawling operations to depths of 1,800 meters (5,900 feet). Her most advanced feature is the incorporation of acoustic quieting technology to enable NOAA scientists to monitor fish populations without the ship's noise altering the behavior of the fish. Her oceanographic hydrophones are mounted on a retractable centerboard, or drop keel, that lowers scientific transducers away from the region of hull-generated flow noise, enhancing the quality of the data collected. To take full advantage of these advanced data-gathering capabilities, she has the Scientific Sonar System, which can accurately measure the biomass of fish in a survey area. She also has an Acoustic Doppler Current Profiler with which to collect data on ocean currents and a multibeam sonar system that provides information on the content of the water column and on the type and topography of the seafloor while she is underway, and she can gather hydrographic data at any speed up to 11 knots (20 km/hr). [1]

Oscar Dyson has a traction-type oceanographic winch which can deploy up to 5,000 meters (16,000 feet) of 17-mm (0.67-inch) wire rope or other cable, including fiberoptic cable. She also has two hydrographic winches, each of which can deploy 3,600 meters (11,800 feet) of 9.5-mm (3/8-inch) EM cable, two trawl winches, each of which can deploy 4,300 meters (14,100 feet) of cable, and a Gilson winch. She has a 60-foot (18-meter) telescopic boom with a lifting capacity of 6,250 pounds (2,835 kg) aft and a 23-foot (7.0-meter) fixed boom with a lifting capacity of 1,000 pounds (450 kg) at her bow. She has an A-frame on her starboard side with a safe working load of 8,050 pounds (3,650 kg) and a large A-frame aft. [2] The oceanographic winch and large after A-frame work in conjunction to serve her stern sampling station, while the two hydrographic winches work with the side A-frame to service her side sampling station, and the two hydrographic winches together give Oscar Dyson the capability to have two scientific packages ready for sequential operations. In addition to trawling, her sampling stations can deploy smaller sampling nets, longlines, and fish traps. The hydrographic winches can deploy CTD instruments to measure the electrical conductivity, temperature, and chlorophyll fluorescence of sea water. Oscar Dyson also can deploy specialized gear such as Multiple Opening/Closing Net and Environmental Sensing System (MOCNESS) frames, towed vehicles, dredges, and bottom corers, and she can deploy and recover both floating and bottom-moored sensor arrays. [1]

Oscar Dyson has various laboratory capabilities. A wet laboratory, a dry laboratory, a biology laboratory, and a hydrographic laboratory all are situated on the starboard side of her main deck, while an electronics and computer laboratory are on the port side of her main deck. Her wet laboratory includes a climate-controlled space with a built-in chiler system. [2]

Oscar Dyson carries two boats. Her 27-foot (8.2-meter) survey launch has a 260-horsepower (194-kW) motor and can accommodate up to eight people. Her 22-foot (6.7-meter) rescue boat has a 256-horsepower (191-kW) motor and can carry up to six people. [2]

Designed for operations in Alaskan waters, Oscar Dyson has an ice-strengthened welded-steel hull. In addition to her crew of 24, she can accommodate up to 15 scientists. [3]

Service history

Operated by NOAA's Office of Marine and Aviation Operations and with Kodiak as her home port, Oscar Dyson's primary purpose is to support NOAA's mission of protecting, restoring, and managing the use of living marine, coastal, and ocean resources. She conducts projects for NOAA's Alaska Fisheries Science Center and the Pacific Marine Environmental Laboratory, studying and monitoring Alaskan pollock and other fisheries in the Bering Sea and Gulf of Alaska. She makes weather and sea state observations, conducts oceanographic research and habitat assessments, and surveys marine mammal and seabird populations. [1] [4]

A ScanEagle unmanned aerial vehicle is launched from NOAAS Oscar Dyson (R 224) in Puget Sound. NOAAS Oscar Dyson (R 224) ScanEagle launch.jpg
A ScanEagle unmanned aerial vehicle is launched from NOAAS Oscar Dyson (R 224) in Puget Sound.

In 2007 and 2008, Oscar Dyson took scientists to the Bering Sea so that they could capture seals on the ice there and attach satellite tags to them with which to collect movement and behavior data. To expand NOAA's ability to monitor ribbon, bearded, spotted, and ringed seals, whose broad range and remoteness from shore make surveying them using manned helicopters challenging, NOAA conducted tests of the ScanEagle unmanned aerial vehicle (UAV) aboard Oscar Dyson in October 2008. On 15 and 16 October 2008, scientists and technicians aboard Oscar Dyson conducted three successful test flights of the ScanEagle over Puget Sound, Washington, launching it from a pneumatic catapult attached to the top of her bridge, flying it by remote control from Oscar Dyson, and recovering it with a "skyhook" system a vertical line deployed over Oscar Dyson's starboard side between a winch and a boom that the ScanEagle could grab with hooks on its wingtips as it returned to the ship. As a United States Coast Guard officer aboard Oscar Dyson to study the feasibility of using the ScanEagle for search and rescue missions looked on, Oscar Dyson's bridge personnel and the embarked UAV pilots cooperated closely to ensure that the ship's speed and heading facilitated the launch and recovery of the aircraft. The test demonstrated the feasibility of using UAVs to assess the abundance and distribution of seals, which began in the spring of 2009. [5] [6]

On 30 April and 1 May 2017, Oscar Dyson surveyed an area in the Bering Sea off Dalnoi Point on the northwestern tip of St. George Island in the Pribilof Islands in a search for the wreck of the 92-foot (28.0 m) crab-fishing boat Destination, which had capsized and sunk in the area with the loss of her entire crew of six men on 11 February 2017. She did not find the wreck, but her survey narrowed the search area for the NOAA research ship NOAAS Fairweather (S 220), which discovered the wreck in about 250 feet (76 m) of water during a survey on 8 and 9 July 2017. [7] [8]

See also

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References

  1. 1 2 3 4 noaa.gov NOAA Ship Oscar Dyson flier
  2. 1 2 3 4 5 noaa.gov NOAA Ship Oscar Dyson Characteristics and Capabilities
  3. 1 2 noaa.gov NOAA Ship Oscar Dyson Engineering
  4. 1 2 noaa.gov NOAA Ship Oscar Dyson
  5. McLean, Sheila, "Unmanned Aircraft Launched from NOAA Ship Oscar Dyson," NOAA Fisheries News Release, October 29, 2008. Archived December 4, 2014, at the Wayback Machine
  6. noaa.gov National Marine Mammal Laboratory Dyson UAS Test Flights
  7. Bernton, Hal (11 February 2019). "No return: The final voyage of the crab boat Destination". Seattle Times. Retrieved 25 January 2021.
  8. Andrews, Laurel (21 July 2017). "Wreck of fishing boat that sank in Bering Sea found by NOAA searchers". Anchorage Daily News. Retrieved 25 January 2021.