Slide Menu
Search Help Show/Hide Menu
Short Citation:
Office of Coast Survey, 2022: NOAA Chart Tile Service, https://www.fisheries.noaa.gov/inport/item/39969.

Item Identification

Title: NOAA Chart Tile Service
Short Name: chart_tile_service
Status: Completed
Publication Date: 2016
Abstract:

The NOAA Chart Tile Service provides standardized nautical chart tilesets for the public, eliminating the need for application developers to regularly undergo the cumbersome process of transforming NOAA BSB files into tilesets. It provides geo-referenced charts compatible with the Web Map Tile Specifications (WMTS) and Tile Map Service Specification (TMS). All tilesets are published on a weekly basis.

Purpose:

Provides the following capabilities:

- Generates geo-referenced single Chart Tilesets from NOAA BSB files. The tileset representing a single NOAA chart at multiple zoom levels.

- Provides a description of all available tilesets.

- Demonstrates single Chart Tileset compatibility with popular mapping APIs.

- Supplies source code describing tileset integration with each API.

- Provides a searching capability for kaps/tilesets with a zoom to tileset feature.

Notes:

1524

Keywords

Theme Keywords

Thesaurus Keyword
UNCONTROLLED
ISO 19115 Topic Category Oceans
NOS Data Explorer Topic Category Nautical Charting
None Hazards
None Marine Navigation
None Mariner
None Nautical Charts
None Navigation
None Ocean-Born Commerce
None Oceans
None United States Nautical Charts
None United States Navigational Charts

Spatial Keywords

Thesaurus Keyword
UNCONTROLLED
None U.S. Exclusive Economic Zone
None U.S. Territories
None U.S. Waters

Physical Location

Organization: Office of Coast Survey
City: Silver Spring
State/Province: MD

Data Set Information

Data Set Scope Code: Data Set
Maintenance Frequency: Weekly
Entity Attribute Overview:

The Nautical chart features are according to the U. S. Nautical chart symbols, abbreviations and terms which are Chart No. 1. The NOAA charts are built and maintained according to the policies and procedures documented in the two volumes of the Nautical Chart Manual. The Marine Chart Division, Quality Assurance Policy and Standards Branch (QAPSB) manages questions in reference to symbols, abbreviations, policy and procedures.

Entity Attribute Detail Citation:

http://chartmaker.ncd.noaa.gov/mcd/chartno1.htm

Distribution Liability:

None

Support Roles

Data Steward

CC ID: 808900
Date Effective From: 2018-12-14
Date Effective To:
Contact (Person): Keown, Patrick
Address: 1315 East West Hwy
Silver Spring, MD 20910-3282
Email Address: patrick.keown@noaa.gov
Phone: 240-533-0031

Distributor

CC ID: 808901
Date Effective From: 2018-12-14
Date Effective To:
Contact (Organization): Office of Coast Survey (OCS)
Address: 1315 East West Highway
Silver Spring, MD 20910
URL: https://www.nauticalcharts.noaa.gov/

Metadata Contact

CC ID: 808902
Date Effective From: 2018-12-14
Date Effective To:
Contact (Person): Keown, Patrick
Address: 1315 East West Hwy
Silver Spring, MD 20910-3282
Email Address: patrick.keown@noaa.gov
Phone: 240-533-0031

Point of Contact

CC ID: 808903
Date Effective From: 2018-12-14
Date Effective To:
Contact (Person): Keown, Patrick
Address: 1315 East West Hwy
Silver Spring, MD 20910-3282
Email Address: patrick.keown@noaa.gov
Phone: 240-533-0031

Extents

Currentness Reference: Publication Date

Extent Group 1

Extent Group 1 / Geographic Area 1

CC ID: 493805
W° Bound: -180
E° Bound: 180
N° Bound: 81.9
S° Bound: 14.4

Extent Group 1 / Time Frame 1

CC ID: 493804
Time Frame Type: Continuing
Start: 2016-10

Access Information

Security Class: Unclassified
Data Access Constraints:

None

Data Use Constraints:

To be used for navigation and/or as per agreement with the NOAA RNC chart distributor and distribution network.

Distribution Information

Distribution 1

CC ID: 493806
Download URL: https://tileservice.charts.noaa.gov/
Distributor: Office of Coast Survey (OCS) (2018-12-14 - Present)
Description:

Online Single Chart Tilesets, Online Quilted Tileset, Metadata, Offline Chart Tilesets, Delta Updates

File Type: Tile Service Specification (TMS)

URLs

URL 1

CC ID: 493798
URL: https://tileservice.charts.noaa.gov/
URL Type:
Online Resource
Description:

Online Single Chart Tilesets, Online Quilted Tileset, Metadata, Offline Chart Tilesets, Delta Updates

Activity Log

Activity Log 1

CC ID: 493822
Activity Date/Time: 2016-12-14
Description:

Date that the source FGDC record was last modified.

Activity Log 2

CC ID: 493821
Activity Date/Time: 2017-04-05
Description:

Converted from FGDC Content Standard for Digital Geospatial Metadata (version FGDC-STD-001-1998) using 'fgdc_to_inport_xml.pl' script. Contact Tyler Christensen (NOS) for details.

Activity Log 3

CC ID: 718984
Activity Date/Time: 2018-02-08
Description:

Partial upload of Positional Accuracy fields only.

Data Quality

Accuracy:

The Nautical chart features are according to the U. S. Nautical chart symbols, abbreviations and terms which are in Chart No. 1. Chart 1 can be found at http://chartmaker.ncd.noaa.gov/mcd/chartno1.htm.

The NOAA charts are built and maintained according to the policies and procedures documented in the two volumes of the Nautical Chart Manual. Questions in reference to symbols, abbreviations, policy and procedures are managed by the Marine Chart Division, Quality Assurance Policy and Standards Branch (QAPSB). For inquiries visit: http://ocsdata.ncd.noaa.gov/dr/inquiry.asp

Horizontal Positional Accuracy:

The art and science of navigation, piloting, and chart making has not been immune to the effects of technology.Prior to 1995, The paper charts were composed manually. In 1995 the paper charts were scanned to create the raster charts. Both, the paper and raster charts are composed from the same digital files.The availability of digital chart products and Differential Global Positioning System (DGPS) has drastically changed navigation. Navigation systems using DGPS for locating a vessel's position on the earth have put mariners in a unique predicament due to a false perception of greater positional accuracy of features portrayed on the charts. In many cases, the DGPS is more accurate than the surveying technology that was used to put the soundings and features on the nautical chart, paper or raster. This discrepancy is even more pronounced when chart scale is taken into consideration. On a 1:40,000 scale chart, a feature could have a potential error of 40 to 80 meters (about 130-160 feet) due to scale alone. This is often the cause of the "ship on the pier" situation, where the vessel tied up at the pier appears on the navigation system to be on the pier rather than alongside.Another source of this type of discrepancy is that symbols on a chart of a given scale may be a representation for multiple real features that are too close together to be shown at chart scale. Similarly, symbols may be displaced from their original location for legibility and presentation. This also applies to products derived from paper charts, such as raster charts and vector charts created by digitizing the paper chart The NOAA Nautical Chart Manual has an extensive description of the horizontal datum.

Vertical Positional Accuracy:

Nautical Charts are navigational tools. Thus, depths are biased for navigation purposes. Charts use multiple vertical datums (Mean higher high water [MHHW]; Mean high water [MHW]; Mean sea level [MSL]; Mean low water [MLW]; Low water datum [LWD]; Mean lower low water [MLLW]; Gulf Coast low water datum [GCLWD].) The NOAA Nautical chart manual has an extensive description of the vertical datum used. Sounding datums used in coastal areas for nautical charting are determined by local observations, ideally over a period of 19 years. The official time period over which tide observations are taken to obtain mean values for tidal datums has been standardized by NOS. The present National Tidal Datum Epoch is from 1983 through 2001. There have been three epochs used previously over the past century: 1924 through 1942, 1941 through 1959, and 1960 through 1978. The individual chart title block documents the datum used for that chart.

Completeness Report:

The charts are navigational tools. Sounding datums used in coastal areas for nautical charting are not referred to the 1929 datum but are determined by local observations, ideally over a period of 19 years. The official time period over which tide observations are taken to obtain mean values for tidal datums has been standardized by NOS. The present National Tidal Datum Epoch is from 1983 through 2001. There have been three epochs used previously in the past century: 1924 through 1942, 1941 through 1959, and 1960 through 1978. The individual chart title block documents the datum used for that chart. Charts use multiple vertical datums (Mean higher high water (MHHW); Mean high water (MHW) ; Mean sea level (MSL); Mean low water (MLW); Low water datum (LWD); Mean lower low water (MLLW); Gulf Coast low water datum (GCLWD). Each organization that provides source data to be applied to the chart has data acquisition and data processing and survey parameters such as vertical and horizontal datums, and quality assurance standards. The Marine Chart Division uses source data according to the policy and procedures specified in the charting manual for each source provider. The density of charting features depends on the scale of the chart or chart inset.

Conceptual Consistency:

It is imperative to recognize that when a symbol, abbreviation, or policy changes, it does not require that all preexisting data on the charts change. Therefore, there are inconsistencies on the charts depending on policy at the time the feature was applied or updated.

Lineage

Process Steps

Process Step 1

CC ID: 493796
Description:

The charts are cartographic products derived as specified in the NOAA Nautical Chart Manual. The suite of charts is compiled and maintained with data provided by federal, state, and private partners such as National Ocean Service elements, United States Coast Guard, United States Army Corps of Engineers, United States Power Squadron Auxiliary, and Port Authorities. These data are constantly being collected and the charts are updated through these sources. The Marine Chart Division evaluates source data, catalogues source data, extracts quality data which are navigationally significant to be applied to the charts. Charts are available in multiple mediums, lithographically printed charts, Raster charts on CDs with weekly updates for navigationally critical information, POD charts that are updated for navigationally critical information on a weekly basis.

Catalog Details

Catalog Item ID: 39969
GUID: gov.noaa.nmfs.inport:39969
Metadata Record Created By: Tyler Christensen
Metadata Record Created: 2017-04-05 13:49+0000
Metadata Record Last Modified By: SysAdmin InPortAdmin
Metadata Record Last Modified: 2019-06-04 13:14+0000
Metadata Record Published: 2018-12-14
Owner Org: OCS
Metadata Publication Status: Published Externally
Do Not Publish?: N
Metadata Review Frequency: 1 Year