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Report for H12321 Locality: Chesapeake Bay Sublocality: 4 Nautical Miles North of Point No Point State(s) or Region(s): Maryland Start Date: 2011-03-28 End Date: 2011-05-18 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 H12321
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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.
H12321.pdf	2.62MB	The document may be read using a free Adobe Reader.
NOAA/NOS ISO metadata record
H12321 View / Download H12321.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.
H12321_VB_4m_MLLW_2of2.bag	0.70MB
H12321_MB_50cm_MLLW_1of2.bag	15.20MB
NOAA/NOS Sounding Data
Download data from the Point Store database via NEXT (NCEI Extract System). Point soundings are from the survey Smooth Sheet or of similar density. Depths in meters. Horizontal datum is (converted to) NAD83 if possible. Please check the associated metadata to confirm the correct datums. The data file format is : SurveyID, Long, Lat, Depth.
H12321		XYZ format.

Images

NOAA/NOS sidescan sonar mosaic in TIFF format
H12321_SSSAB_1m_455kHz_2of2.tiff	34.77MB	NOAA/NOS TIFF sidescan sonar mosaic survey image. The mosaic may be viewed with a standard image viewer.
H12321_SSSAB_1m_455kHz_1of2.tiff	35.09MB	NOAA/NOS TIFF sidescan sonar mosaic survey image. The mosaic may be viewed with a standard image viewer.

Bottom Samples and Tide Documents

Bottom Sample Data
NOAA/NOS bottom sample listing in IMLGS (pre-1989)
Link to H12321 in IMLGS (pre-1989 samples)		Search NOAA/NOS seabed samples submitted to IMLGS through NMNH (pre-1989). Modern survey bottom samples are not currently viewable on a map service.
NOAA/NOS bottom sample document in PDF or ASC format
H12321_BottomSamples.ascii	382 Bytes	NOAA/NOS bottom sample document in PDF or ASC format.
NOAA/NOS Tide Note in PDF Format
H12321.tn.pdf	45.9KB	This document may be read using a free Adobe Reader.
NOAA/NOS Tide Zone in PDF format
H12321.tz.pdf	81.8KB	This document may be read using a free Adobe Reader.

Project Documents

Project Sketch in JPEG format
OPR-E349-BH-11(H12321).jpg	131.9KB	Project sketch image with highlighted survey area.
Data Acquisition and Processing Report in PDF format
OPR-E349-BH-11_DAPR.pdf	10.67MB	This document may be read using a free Adobe Reader.

Survey Metadata

Survey Summary

Locality Sublocality State or Region Chesapeake Bay 4 Nautical Miles North of Point No Point Maryland

Start Date End Date Approval Date 2011-03-28 2011-05-18 2012-04-11

Project Number Project Name Purpose OPR-E349-BH-11 Central Chesapeake Bay, MD Update Nautical Chart(s)

Source of Original Data and License Information

License Information These data were produced by NOAA and are in the public domain within the United States. 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 High Water North American Datum 1983 Projected UTM 18 10000

Survey Tide Stations COOPS Tide Station ID Tolchester Beach, Maryland 8573364 Lewisetta, Virginia 8635750 Bishops Head, Maryland 8571421 Solomons Island, Maryland 8577330

Affected Products

ENCs RNCs US5VA22M 12233 12230

Junction Surveys H12267 H11598

Survey Equipment

Vessel(s) Chief(s) of Party NOAA BAY HYDRO II Megan R. Guberski

Manufacturer Model Instrument Type Teledyne Odom Hydrographic Echotrac CV200 SBES Seabird-Seacat SBE 19 Plus CTD Profiler Conductivity Temperature and Depth Odom Digibar Pro DB1200 Sound Velocity Probe Trimble DSM212L DGPS Receiver Satellite DGPS Starlink DNAV-212 GPS Receiver Satellite GPS Teledyne RESON SeaBat 7125 MBES Klein 5250 Applanix TSS POS/MV 320 GPS Receiver Satellite GPS

Source Data at NCEI

Data in Archive Size (in GB) Date Archived Data Types Surveyed Raw and Processed 37.206 2013-03-08 BATHYMETRY