Report for H13446

Locality:	Unimak Island, AK
Sublocality:	Offshore Chernofski Harbor
State(s) or Region(s):	Alaska

Start Date:	2021-06-13
End Date:	2021-06-19

These data are not to be used for navigation.
For navigation please refer to NOS Nautical Charts.

Downloads may take a long time, depending on file size and data transfer rates.

Download All Products for H13446

Visit the full NCEI Bathymetry Viewer.

Survey Products

Descriptive Report and Metadata Documents

NOAA/NOS Descriptive Report
Products listed in the project descriptive report (DR) may not reflect final products available through NCEI.
H13446_DR.pdf	5.23MB	The document may be read using a free Adobe Reader.
H13446_DR.xml	38.3KB	Descriptive Report in XML format. May be opened using a web browser or text viewer.
NOAA/NOS ISO metadata record
H13446 View / Download H13446.xml		Usually presented as an XML document, which captures the basic characteristics of HSMDB metadata verified from H10000 (1982) to the present as well as F00200 (1965) to the present.

Bathymetry

Bathymetric Attributed Grid (BAG) Data
Survey products may use different units, datums or projections than the associated survey. Please consult product-specific metadata for additional details.
The BAG format is a gridded, multi-dimensional bathymetric data file (see Open Navigation Surface). Readable with various applications such as the free CARIS Easy View, ESRI ArcGIS or open source GDAL. The BAGXYZ files are ascii representations of the BAG data in XYZ format, but do not include uncertainty.
H13446_MB_4m_MLLW_1of2.bag	16.32MB
H13446_MB_8m_MLLW_2of2.bag	12.76MB
Ellipsoid Referenced BAG Files
Ellipsoid referenced Bag files have a vertical datum that may differ materially from the charted datum. Please refer to the file level metadata to ensure proper display.
H13446_MB_8m_Ellipsoid_2of2.bag	13.07MB
H13446_MB_4m_Ellipsoid_1of2.bag	16.50MB

Images

GeoImagePDF
H13446_GeoImage.pdf	20.24MB	NOAA/NOS Layered GeoSpatial Image PDF File. Created by NOS to include chart and survey layers in a georeferenced pdf format.
NOAA/NOS multibeam acoustic backscatter mosaic in TIFF format
The multibeam acoustic backscatter mosaic is readable with various applications such as the free CARIS Easy View, or ESRI ArcGIS geospatial visualization software.
H13446_MBAB_3m_Woldstad_200kHz_1of1.tif	23.33MB	NOAA/NOS TIFF multibeam acoustic backscatter mosaic survey image.

Bottom Samples and Tide Documents

NOAA/NOS Tide Note in PDF Format
H13446_tn.pdf	5.01MB	This document may be read using a free Adobe Reader.

Project Documents

Project Sketch in JPEG format
H13446_ProjectSketch.jpg	118.0KB	Project sketch image with highlighted survey area.
Data Acquisition and Processing Report in PDF format
OPR-Q350-KR-21_DAPR.pdf	1.04MB	This document may be read using a free Adobe Reader.

Survey Metadata

Survey Summary

Locality

Sublocality

State or Region

Unimak Island, AK

Offshore Chernofski Harbor

Alaska

Start Date	End Date	Approval Date
2021-06-13	2021-06-19	2021-10-07

Project Number	Project Name	Purpose
OPR-Q350-KR-21

Source of Original Data

Link to Original Data	Data Source

Reference System Information

Vertical Datum	Horizontal Datum	Projection	Scale
Mean Lower Low Water	North American Datum 1983	Projected UTM 3	5000

Tide Note

Tide Zones

Survey Tide Stations

COOPS Tide Station ID

Affected Products

ENCs

RNCs

US5AK64M

Junction Surveys

H13445 H13444

Survey Equipment

Vessel(s)

Chief(s) of Party

R/V Woldstad

Allison Stone

Manufacturer	Model	Instrument Type
Teledyne Oceanscience	rapidCAST	Sound Speed System
Teledyne RESON	SVP 70	Sound Speed System
Teledyne RESON	SeaBat 7125 SV2	MBES
Applanix	POS MV 320 v5	Positioning and Attitude System

Source Data at NCEI

Data in Archive

Size (in GB)

Date Archived

Data Types Surveyed

Raw and Processed

100.929

2023-03-07 13:55:47.0

BACKSCATTER,

BATHYMETRY