1.1. Definition

1.2. Changes From April 2007 Edition

2. Datums

2.1. Horizontal Datum

2.2. Sounding Datum

2.3. Time

3. Hydrographic Position Control

3.1. Horizontal Position Accuracy

3.2. Differential Global Positioning System (DGPS)

3.2.1. DGPS Specifications

3.2.2. DGPS Site Confirmation

3.2.3. Other GPS Techniques

4. Tides and Water Levels Requirements

4.1. General Project Requirements and Scope

4.1.1. Scope

4.1.2. Objectives

4.1.3. Planning and Preliminary Tidal Zoning

4.1.4. NOS Control Stations and Data Quality Monitoring

4.1.5. General Data and Reference Datum Requirements

4.1.6. Error Budget Considerations

4.2. Data Collection and Field Work

4.2.1. Water Level Station Requirements

4.2.2. Water Level Measurement Systems and Data Transmissions

4.2.3. Station Installation, Operation and Removal

4.2.4. Tide Staffs

4.2.5. Bench Marks and Leveling

4.2.6. Water Level Station Documentation

4.2.7. Additional Field Requirements

4.2.8. Geodetic Connections and Datums Relationship

4.2.9. NAVD 88 Level Tie

4.2.10. GPS Observations

4.2.11. North American Datum 1983 (NAD83) GPS Tie

4.2.12. GPS Data Processing Using OPUS

4.2.13. OPUS DB Preliminary Information

4.2.14. NAVD 88 GPS Tie

4.3. Data Processing and Reduction

4.3.1. Data Quality Control

4.3.2. Data Processing and Tabulation of the Tide

4.3.3. Computation of Monthly Means

4.3.4. Data Editing and Gap Filling Specifications

4.4. Computation of Tidal Datums and Water Level Datums

4.4.1. National Tidal Datum Epoch

4.4.2. Computational Procedures

4.4.3. Tidal Datum Recovery

4.4.4. Quality Control

4.5. Final Zoning and Tide Reducers

4.5.1. Water Level Station Summaries

4.5.2. Construction of Final Tidal Zoning Schemes

4.5.3. Tide Reducer Files and Final Tide Note

4.6. Data Submission Requirements

4.6.1. Station Documentation

4.6.2. GPS Project Documentation

4.6.3. Water Level Data

4.6.4. Tabulations and Tidal Datums

4.6.5. Tide Reducers and Final Zoning and Final Tide Note

4.6.6. Submission and Deliverables - Documents and Time Lines

4.7. Guidelines and References

5. Depth Sounding

5.1. Multibeam and Other Echosounders

5.1.1. Accuracy and Resolution Standards

5.1.1.1. Accuracy Standards

5.1.1.2. Multibeam Resolution Standards

5.1.1.3. Gridded Data Specifications

5.1.2. Coverage

5.1.2.1. Object Detection Coverage

5.1.2.2. Complete Multibeam Coverage

5.1.2.3. Set Line Spacing

5.1.3. Corrections to Echo Soundings

5.1.3.1. Instrument Error Corrections

5.1.3.2. Draft Corrections

5.1.3.3. Speed of Sound Corrections

5.1.3.4. Attitude Corrections

5.1.3.5 Error Budget Analysis for Depths

5.1.4. Quality Control

5.1.4.1. Multibeam Sonar Calibration

5.1.4.2. Positioning System Confidence Checks

5.1.4.3. Crosslines

5.2. Lidar

5.2.1. Accuracy and Resolution Standards

5.2.1.1 Lidar Resolution Standards

5.2.1.2. Gridded Data Specifications

5.2.2. Coverage

5.2.3 Corrections to Lidar Sounding

5.2.3.1 Instrument Error Corrections

5.2.4 Quality Control

5.2.4.1. Lidar Calibration

5.2.4.2. Positioning System Confidence Checks

5.2.4.3. Crosslines

6. Towed Side Scan Sonar

6.1. Coverage

6.2. Side Scan Acquisition Parameters and Requirements

6.2.1. Accuracy

6.2.2. Speed

6.2.3. Towfish Height

6.2.4. Horizontal Range

6.3. Quality Control

6.3.1. Confidence Checks

6.3.2. Significant Contacts

6.3.3. Contact Correlation

6.3.4. Identification of Potential Field Examinations

7. Other Data

7.1. Bottom Characteristics

7.2. Aids to Navigation

8. Deliverables

8.1. Field Reports

8.1.1. Progress Sketch and Survey Outline

8.1.2. Danger to Navigation Report

8.1.2.1. Charted Feature Removal Request

8.1.3. Descriptive Report (DR)

8.1.4. Descriptive Report Supplemental Reports

8.1.4.1. Data Acquisition and PRocessing Report

8.1.4.2. Horizontal and Vertical Control Report

8.2. S-57 Feature File

8.2.1. S-57 Attribution

8.2.2. Cartographic Specifications and Conventions

8.3. Side Scan Sonar

8.3.1. Side Scan Sonar Mosaic

8.3.2. Side Scan Sonar Contact List

8.3.3. Data Acquisition and processing Abstracts

8.4. Digital Data Files

8.4.1. Media

8.4.2. Single-beam Data

8.4.3. Shallow-Water Multibeam and Lidar Data

8.4.4. Side Scan Sonar Data

8.4.5. Other Data

Appendix 1

NOAA Form 77-12 Tide Station Report &
N/OMA121 Form 91-01 Next Generation Water Level
Measurement System Site Report

Appendix 2

NOAA Form 76-35A Descriptive Report Cover Sheet

Appendix 3

NOAA Form 77-28 Descriptive Report Title Sheet

Appendix 4

Abstract of Times of Hydrography For Smooth Tides or Water Levels

Appendix 5

Example Request for Smooth Tides/Water Levels Letter

Appendix 6

Danger to Navigation Report

Example # 1 Danger to Navigation Report

Example #2(a) Chartlet for Navigation
Report

Appendix 7

Data Acquisition and Processing Report

Appendix 8

Rock Attribution in Accordance with NOAA Nuatical Chart Manual Section 4.9

Appendix 9

Example of Annual Statistics Report