Wrecks and Obstructions
Data Set (DS) | Office for Coastal Management (OCM)GUID: gov.noaa.nmfs.inport:70439 | Updated: August 10, 2023 | Published / External
Summary
Short Citation
Office for Coastal Management, 2024: Wrecks and Obstructions, https://www.fisheries.noaa.gov/inport/item/70439.
Full Citation Examples
Ship wrecks and obstructions in the ocean have long been a hazard to navigation and construction, and a point of interest to archeologist, recreational divers, fisherman, educators and explorers. Locating hazardous wrecks and obstructions is part of the ongoing NOAA charting process. The exact position of many wrecks is difficult to determine because of changes in the environment, varied survey methods, and human error. Some wrecks are intentionally placed in the ocean to serve as artificial reefs or for disposal. Others pose a health and environmental threat from their cargo. Ownership and control over wrecks and obstructions is governed by a collection of state and federal regulations, the Abandoned Shipwreck Act, National Historic Preservation Act, and the National Marine Sanctuaries Act.
These data are a synthesis of two sources - the NOAA Office of Coast Survey's 2016 Automated Wreck and Obstruction Information System (AWOIS), and the NOAA Electronic Navigational Charts (ENC). Not included were those records that were clearly identified as natural features such as rocks, shoals, and trees. Features are recorded as either a wreck, wreck area, obstruction, or unknown.
Distribution Information
-
MarineCadastre.gov Data Registry
For coastal and ocean planning
Controlled Theme Keywords
ENVIRONMENTAL GOVERNANCE/MANAGEMENT, oceans, planningCadastre, transportation
Child Items
No Child Items for this record.
Contact Information
Point of Contact
NOAA Office for Coastal Management (NOAA/OCM)
coastal.info@noaa.gov
(843) 740-1202
Extents
-178.4° W,
179.3° E,
71.4° N,
-14.4° S
2023-08-01
publication date
Item Identification
| Title: | Wrecks and Obstructions |
|---|---|
| Status: | Completed |
| Publication Date: | 2023-08-14 |
| Abstract: |
Ship wrecks and obstructions in the ocean have long been a hazard to navigation and construction, and a point of interest to archeologist, recreational divers, fisherman, educators and explorers. Locating hazardous wrecks and obstructions is part of the ongoing NOAA charting process. The exact position of many wrecks is difficult to determine because of changes in the environment, varied survey methods, and human error. Some wrecks are intentionally placed in the ocean to serve as artificial reefs or for disposal. Others pose a health and environmental threat from their cargo. Ownership and control over wrecks and obstructions is governed by a collection of state and federal regulations, the Abandoned Shipwreck Act, National Historic Preservation Act, and the National Marine Sanctuaries Act. These data are a synthesis of two sources - the NOAA Office of Coast Survey's 2016 Automated Wreck and Obstruction Information System (AWOIS), and the NOAA Electronic Navigational Charts (ENC). Not included were those records that were clearly identified as natural features such as rocks, shoals, and trees. Features are recorded as either a wreck, wreck area, obstruction, or unknown. |
| Purpose: |
To support ocean planning activities pursuant to the Executive Order Regarding the Ocean Policy to Advance the Economic, Security, and Environmental Interests of the United States, the Energy Policy Act, the National Environmental Policy Act, the Rivers and Harbors Act, and the Coastal Zone Management Act. |
| Supplemental Information: |
Bureau Code: 006:48, Program Code: 006:055 |
Keywords
Theme Keywords
| Thesaurus | Keyword |
|---|---|
| Global Change Master Directory (GCMD) Science Keywords |
EARTH SCIENCE > HUMAN DIMENSIONS > ENVIRONMENTAL GOVERNANCE/MANAGEMENT
|
| ISO 19115 Topic Category |
oceans
|
| ISO 19115 Topic Category |
planningCadastre
|
| ISO 19115 Topic Category |
transportation
|
| UNCONTROLLED | |
| None | coastal |
| None | planning |
| None | renewable energy |
Spatial Keywords
| Thesaurus | Keyword |
|---|---|
| Global Change Master Directory (GCMD) Location Keywords |
CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA
|
| UNCONTROLLED | |
| None | Exclusive Economic Zone |
| None | Outer Continental Shelf |
| None | Territorial Sea |
Physical Location
| Organization: | Office for Coastal Management |
|---|---|
| City: | Charleston |
| State/Province: | SC |
Data Set Information
| Data Set Scope Code: | Data Set |
|---|---|
| Maintenance Frequency: | None Planned |
| Data Presentation Form: | Map (digital) |
| Entity Attribute Overview: |
objectCategory, objectName, positionQuality, yearSunk, sourceRecord, sourceDate, dataSourceName, comment sourceRecord key for ENC sources: 1) ENCHWPT = 1:5,000 to 1:50,000 wreck point 2) ENCHOPT = 1:5,000 to 1:50,000 obstruction point 3) ENCHWA = 1:5,000 to 1:50,000 wreck area 4) ENCAWPT = 1:50,000 to 1:150,000 wreck point 5) ENCAOPT = 1:50,000 to 1:150,000 obstruction point 6) ENCAWA = 1:50,000 to 1:150,000 wreck area |
| Distribution Liability: |
https://www.marinecadastre.gov/about/disclaimer.html |
| Data Set Credit: | NOAA Office of Coast Survey, NOAA Office for Coastal Management |
Support Roles
Point of Contact
| Date Effective From: | 2018-06 |
|---|---|
| Date Effective To: | |
| Contact (Organization): | NOAA Office for Coastal Management (NOAA/OCM) |
| Address: |
2234 South Hobson Ave Charleston, SC 29405-2413 |
| Email Address: | coastal.info@noaa.gov |
| Phone: | (843) 740-1202 |
| URL: | https://coast.noaa.gov |
Extents
| Currentness Reference: | Publication Date |
|---|
Extent Group 1
Extent Group 1 / Geographic Area 1
| W° Bound: | -178.4 | |
|---|---|---|
| E° Bound: | 179.3 | |
| N° Bound: | 71.4 | |
| S° Bound: | -14.4 |
Extent Group 1 / Time Frame 1
| Time Frame Type: | Discrete |
|---|---|
| Start: | 2023-08-01 |
| Description: |
publication date |
Spatial Information
Spatial Representation
Representations Used
| Grid: | No |
|---|---|
| Vector: | Yes |
| Text / Table: | No |
| TIN: | No |
| Stereo Model: | No |
| Video: | No |
Vector Representation 1
| Complex Object Present?: | No |
|---|---|
| Composite Object Present?: | No |
| Curve Object Present?: | No |
| Point Object Present?: | Yes |
| Point Object Count: | 41941 |
| Solid Object Present?: | No |
| Surface Object Present?: | No |
Reference Systems
Reference System 1
Coordinate Reference System |
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Access Information
| Security Class: | Unclassified |
|---|---|
| Data Use Constraints: |
For coastal and ocean planning |
Distribution Information
Distribution 1
| Download URL: | https://marinecadastre.gov/data/ |
|---|---|
| Distributor: | |
| Description: |
MarineCadastre.gov Data Registry |
Distribution 2
| Download URL: | https://marinecadastre.gov/downloads/data/mc/WreckObstruction.zip |
|---|---|
| Distributor: |
Technical Environment
| Description: |
Microsoft Windows, ArcGIS Pro, Azure SQL |
|---|
Data Quality
| Accuracy: |
Untested |
|---|---|
| Analytical Accuracy: |
Multiple records at slightly different locations may exist in a small number of cases for a single wreck or obstruction. This can occur when 2 or more sources are used, and the sources do not include sufficient detail to identify the feature. This can also occur when a single wreck or obstruction is mapped at multiple time frames using different survey methods and technology. |
| Horizontal Positional Accuracy: |
Compiled to meet 30 meters horizontal accuracy at 95% confidence level |
| Completeness Report: |
Untested |
| Conceptual Consistency: |
These data are logically consistent |
Lineage
Sources
Automated Wreck and Obstruction Information System
| Contact Role Type: | Originator |
|---|---|
| Contact Type: | Organization |
| Contact Name: | NOAA Office of Coast Survey |
| Publish Date: | 2016-01-01 |
| Citation URL: | https://www.nauticalcharts.noaa.gov/data/wrecks-and-obstructions.html |
| Source Contribution: |
Position and attribute values for wrecks and obstructions |
NOAA Electronic Navigational Charts
| Contact Role Type: | Originator |
|---|---|
| Contact Type: | Organization |
| Contact Name: | NOAA Office of Coast Survey |
| Publish Date: | 2023-08-01 |
| Citation URL: | https://encdirect.noaa.gov/arcgis/rest/services/encdirect |
| Source Contribution: |
DangersP(30) > Harbor.Obstruction_point(33) DangersP(30) > Harbor.Wreck_point(36) DangersA(153) > Harbor.Obstruction_area(156) DangersA(153) > Harbor.Wreck_area(158) DangersP(30) > Approach.Obstruction_point(36) DangersP(30) > Approach.Wreck_point(39) DangersA(158) > Approach.Obstruction_area(161) DangersA(158) > Approach.Wreck_area(163) |
Process Steps
Process Step 1
| Description: |
1) Acquire primary sources 2) Normalize the data structure 3) Transform polygon features to a polygon centroid point feature 4) Remove duplicate values from the ENC Approach class when there was co-occurrence within a 100-meter range in the Harbor class 5) Remove characters from the COMMENT field identified as, special, formatting, reserved, and unnecessary white space 6) Standardize all unknown, blank and null-like values to a consistent format 7) Standardize all character fonts to uppercase 8) Remove features clearly identified as natural 9) Amend the OBJECTCATEGORY field when values in the COMMENT field indicate a specific category 10) MERGE the source data into a single point feature class 11) Optimize field type and field size settings |
|---|---|
| Process Date/Time: | 2023-08-09 00:00:00 |
| Process Contact: | NOAA Office for Coastal Management (NOAA/OCM) |
| Phone (Voice): | (843) 740-1202 |
| Email Address: | coastal.info@noaa.gov |
Catalog Details
| Catalog Item ID: | 70439 |
|---|---|
| GUID: | gov.noaa.nmfs.inport:70439 |
| Metadata Record Created By: | Daniel Martin |
| Metadata Record Created: | 2023-08-10 13:53+0000 |
| Metadata Record Last Modified By: | Daniel Martin |
| Metadata Record Last Modified: | 2023-08-10 18:33+0000 |
| Metadata Record Published: | 2023-08-10 |
| Owner Org: | OCM |
| Metadata Publication Status: | Published Externally |
| Do Not Publish?: | N |
| Metadata Last Review Date: | 2019-04-25 |
| Metadata Review Frequency: | 1 Year |
| Metadata Next Review Date: | 2020-04-25 |