NOAA Charting - Unimak Pass Unimak, Alaska
We conducted hydrographic surveys in this critical shipping waterway using shallow-water multibeam sonar. The bathymetry was acquired using the hydrographic survey vessel R/V Kittiwake, a steel hull vessel, 30.3 meters in length.
The final depth information was submitted in digital form as CARIS BASE surfaces and also in Bathymetric Attributed Grid (BAG) formats that best represented the sea floor at the time of the survey.
Sounding data was tide adjusted using final tide levels for the historic U.S. Coast & Geodetic Survey (USC&GS) tide station at Cape Sarichef on Unimak Island.
The survey identified a sunken cargo vessel that had never been charted. A review of the Department of the Interior, Minerals Management Service, Alaska Outer Continental Shelf Regions online database, produced an entry suggesting that the wreck was the 551' M/V Pan Nova, a Korean freighter carrying a load of wheat that sank five nautical miles north of Akun Island following a collision with another Korean freighter in the Unimak Pass area on September 10, 1983.
TerraSond was awarded another task in 2009 to complete the survey of Unimak Pass. The survey completion will require 100% multibeam coverage of 748 square nautical miles. The project is currently underway with the 180' R/V Bluefin and 30' Mt. Augustine, two Reson 8101 multibeam sonar systems, tertiary tide gauges and post processed kinematic GPS (PPK).
- Control Surveys
- Electronic Navigational Charts
- Map and Plat Production
- Multibeam Sonar Surveys
- Nautical Charting
- Satellite and Wireless Communications
- Sediment Sampling
- Ship-to-Shore and Ship-to-Ship Telephone and Data Systems
- Side Scan Sonar Surveys
- Tidal Studies
- Applied Microsystems Smart Sensor
- Applied Microsystems SVPlus
- Blue Marble Geographic Transformer
- CARIS Bathy DataBASE
- CARIS GIS Professional
- CARIS HIPS & SIPS
- CARIS Notebook
- Chartered Vessels
- CodaOctopus F180
- IVS 3D Fledermaus Professional
- M/V Irish Ayes
- MapInfo Professional
- Maptech Chart Navigator
- Odom Hydrotrac
- QPS QINSy
- Reson SeaBat 8101
- Sea-Bird SBE 26plus SEAGAUGE w/ LinkQuest Acoustic Modem
- Seatex Seapath 200
- Trimble 4000
- Trimble DSM212 DGPS
- Trimble Geomatics Office