NOAA > NESDIS > NCEI (formerly NGDC) > Marine Geology and Geophysics > Bathymetry & Relief privacy policy  All Bathy/Relief Coastal DEMs Fishing Global Lakes Multibeam NOS

Report for H13968 Locality: Tangier Sound Sublocality: Manokin and Big Annemessex Rivers State(s) or Region(s): Maryland Start Date: 2024-06-21 End Date: 2024-12-03 These data are not to be used for navigation. For navigation please refer to NOS Nautical Charts. Download times vary depending on file size and data transfer rates. Download All Products for H13968
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Survey Products

Descriptive Report and Metadata Documents

NOAA/NOS Descriptive Reports and Metadata Documents
Products listed in these reports may not reflect final products available through NCEI.
H13968_DR.pdf	1.26MB	The document may be read using a free Adobe Reader.
H13968_DR.xml	56.5KB	Descriptive Report in XML format. May be opened using a web browser or text viewer.
NOAA/NOS ISO metadata record
H13968 View / Download H13968.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

Survey products may use different units, datums or projections than the associated survey. Please consult product-specific metadata for additional details.
Bathymetric Attributed Grid (BAG) Data
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.
H13968_MB_1m_MLLW_1of1.bag	199.25MB
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.
H13968_MB_1m_Ellipsoid_1of1.bag	185.12MB

Images

GeoImagePDF
H13968_GeoImage.pdf	18.50MB	NOAA/NOS Layered GeoSpatial Image PDF File. Created by NOS to include chart and survey layers in a georeferenced pdf format.
NOAA/NOS sidescan sonar mosaic in TIFF format
H13968_SSSAB_1m_400kHz_2of2.tif	14.13MB	NOAA/NOS TIFF sidescan sonar mosaic survey image. The mosaic may be viewed with a standard image viewer.
H13968_SSSAB_1m_400kHz_1of2.tif	231.19MB	NOAA/NOS TIFF sidescan sonar mosaic survey image. The mosaic may be viewed with a standard image viewer.
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.
H13968_MBAB_2m_PU_400kHz_2of3.tiff	14.30MB	NOAA/NOS TIFF multibeam acoustic backscatter mosaic survey image.
H13968_MBAB_2m_CU_400kHz_1of3.tiff	4.37MB	NOAA/NOS TIFF multibeam acoustic backscatter mosaic survey image.
H13968_MBAB_2m_TH_400kHz_3of3.tiff	9.71MB	NOAA/NOS TIFF multibeam acoustic backscatter mosaic survey image.

Bottom Samples and Tide Documents

NOAA/NOS bottom sample document in PDF or ASC format
H13968_BottomSamples.ascii	1.4KB	NOAA/NOS bottom sample document in PDF or ASC format.
Zip file containing bottom sample images and a shapefile of their locations
H13968_BottomSamples_shp_images.zip	18.73MB	Images may be viewed as standalone products or the shapefile can also be used to display where the images were taken.

Project Documents

Data Acquisition and Processing Report in PDF format
OPR-E352-KR-24_DAPR.pdf	47.34MB	This document may be read using a free Adobe Reader.
Horizontal and Vertical Control Report in PDF Format
OPR-E352-KR-24_HVCR.pdf	222.4KB	This document may be read using a free Adobe Reader.

Survey Metadata

Survey Summary

Locality Sublocality State or Region Tangier Sound Manokin and Big Annemessex Rivers Maryland

Start Date End Date Approval Date 2024-06-21 2024-12-03 2025-02-06

Project Number Project Name Purpose OPR-E352-KR-24

Source of Original Data and License Information

License Information These data were produced under contract with NOAA and any potential copyright was assigned to NOAA. NOAA waives any potential copyright and related rights in these data worldwide through the Creative Commons Zero 1.0 Universal Public Domain Dedication (CC0-1.0). View the license deed. View the legal code.

Reference System Information

Vertical Datum Horizontal Datum Projection Scale Mean Lower Low Water North American Datum 1983 (2011) Projected UTM 18 20000

Affected Products

ENCs RNCs US5VA21M US4MD20M

Survey Equipment

Vessel(s) Chief(s) of Party Pulse R/V Thunder Current David Neff, CH

Manufacturer Model Instrument Type R2Sonic I2NS Positioning System Applanix POS MV OceanMaster Positioning and Attitude System Applanix POS MV WaveMaster Positioning and Attitude System AML Oceanographic AML-3 LGR Sound Speed System AML Oceanographic MicroX SV Sound Speed System R2Sonic 2022 MBES AML Oceanographic BaseX2 Sound Speed System EdgeTech 4125 SSS R2Sonic 2024 MBES

Source Data at NCEI

Data in Archive Size (in GB) Date Archived Data Types Surveyed Raw Data Only 485.228 2025-03-16 22:18:47.0 BACKSCATTER, BATHYMETRY