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 H13977 Locality: Approaches to Calcasieu Sublocality: 10 NM Southwest of Trinity Shoal State(s) or Region(s): Louisiana Start Date: 2024-09-25 End Date: 2025-01-25 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 H13977
Visit the full NCEI Bathymetry Viewer.

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.
H13977_DR.pdf	0.93MB	The document may be read using a free Adobe Reader.
H13977_DR.xml	53.7KB	Descriptive Report in XML format. May be opened using a web browser or text viewer.
NOAA/NOS ISO metadata record
H13977 View / Download H13977.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.
H13977_MB_1m_MLLW_1of2.bag	533.46MB
H13977_MB_2m_MLLW_2of2.bag	252.64MB
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.
H13977_MB_2m_Ellipsoid_2of2.bag	247.21MB
H13977_MB_1m_Ellipsoid_1of2.bag	520.09MB

Images

GeoImagePDF
H13977_GeoImage.pdf	15.88MB	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
H13977_SSSAB_1m_540kHz_1of2.tif	2014.12MB	NOAA/NOS TIFF sidescan sonar mosaic survey image. The mosaic may be viewed with a standard image viewer.
H13977_SSSAB_1m_540kHz_2of2.tif	742.18MB	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.
H13977_MBAB_2m_BL_400kHz_1of1.tif	489.68MB	NOAA/NOS TIFF multibeam acoustic backscatter mosaic survey image.

Bottom Samples and Tide Documents

NOAA/NOS bottom sample document in PDF or ASC format
H13977_BottomSamples.ascii	0.9KB	NOAA/NOS bottom sample document in PDF or ASC format.
Zip file containing bottom sample images and a shapefile of their locations
H13977_BottomSamples_shp_images.zip	4.73MB	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-K356-KR-24_DAPR.pdf	3.46MB	This document may be read using a free Adobe Reader.

Survey Metadata

Survey Summary

Locality Sublocality State or Region Approaches to Calcasieu 10 NM Southwest of Trinity Shoal Louisiana

Start Date End Date Approval Date 2024-09-25 2025-01-25 2025-04-08

Project Number Project Name Purpose OPR-K356-KR-24

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 Lower Low Water North American Datum 1983 (2011) Projected UTM 15 40000

Affected Products

ENCs RNCs US4LA1EE US4LA15M US3GC03M

Junction Surveys H13979 H13978 H13976 H13318 H13316 D00281

Survey Equipment

Vessel(s) Chief(s) of Party S/V Blake Jonathan L. Dasler, PE, PLS, CH

Manufacturer Model Instrument Type Applanix POS MV OceanMaster Positioning and Attitude System AML Oceanographic MicroX SV Sound Speed System Teledyne RESON SeaBat T50-R MBES AML Oceanographic MVP30-350 Conductivity, Temperature, and Depth Sensor EdgeTech 4200 SSS

Source Data at NCEI

Data in Archive Size (in GB) Date Archived Data Types Surveyed Raw Data Only 710.019 2025-06-11 05:16:48.0 BACKSCATTER, SIDE SCAN, BATHYMETRY