North American Datum 1983Projected UTM 17file:///Q:/Survey/H12978_G343_FH_17/AHB_H12978/Reports/DR/Report/Images/H12978_GPS_Bust.pngExample of rejected data that exceeded 2017 HSSD specifications file:///Q:/Survey/H12978_G343_FH_17/AHB_H12978/Reports/DR/Report/Images/H12978_GPStide_minus_TRADtide.pngVariable Resolution difference surface; data referenced to traditional tides minus data referenced to the ellipseMarinestar Solution - Vertical OffsetsAfter processing and applying Marinestar SBETS to port and starboard lines on H12978, vertical offsets were discovered in the data which on average were ~0.20m. The cause of the vertical offset is due to interruptions to the MarinestarGNSS correctors likely due to unavoidable dropouts of the L-band signal in the Primary GNSS antenna. When data were referenced to MLLW via traditional tides, the offsets do not appear. Though most of the data were within 2017 HSSD Specs for vertical uncertainty, six (6) crosslines experience large vertical offsets that exceed 2017 HSSD Specs and were therefore rejected and not delivered with the final products. For more information, please see the Project Correspondence.All data for survey H12978 have been reduced to Mean Lower Low Water (MLLW) using documented VDatum techniques. The Ferdinand R. Hassler is equipped with Applanix POS/MV position and orientation systems on the port and starboard hulls. Both POS/MV systems have been integrated with Fugro's Marinestar service, which provides real-time GPS correctors via satellite. The correctors are derived using a Precise Point Positioning (PPP) approach. The POS/MV data was post-processed in Applanix POSPac MMS to produce Smoothed Best Estimates of Trajectory (SBETs) and RMS uncertainty files using the method of Post Processed Precise Point Positioning (5P). See section 3.3.1 for vertical offset details.Mean Lower Low WaterERS via VDATUMVDatum_shapefile_xyNAD83-MLLW_geoid12bThe purpose of this project is to provide contemporary surveys to update National Ocean Service (NOS) nautical charting products. The Port of Jacksonville has seen a drastic increase in container volume and will be adding a JAXPORT Cruise Terminal for Carnival Cruises. The harbor and channel entrance is in need of updated mapping to meet the needs of larger ships transiting into the Port of Jacksonville. The charts would aid in continuing to support larger, fully loaded Neo-Panamax ships transiting to the Port of Jacksonville.076.600001061.100S-25007.276.600001061.1002017-10-252017-10-262017-10-272017-10-282017-10-292017-10-302017-10-312017-11-0148.350000Mainscheme survey lines were run with a dual-head multibeam echo sounder. Linear nautical miles were calculated by using the starboard head only.Complete Coverage (refer to HSSD Section 5.2.2.3)All waters in survey areaAll MBES acquisition requires backscatter acquisition (refer to HSSD Section 6.2)All waters in survey areaOne hundred twenty eight (128) holidays occur within sheet H12978. All holidays were due to lack of overlap and were on average 10-30m long. No holidays exist over the tops of potentially significant features.file:///Q:/Survey/H12978_G343_FH_17/AHB_H12978/Reports/DR/Report/Images/H12978_CoverageGraphic.pngH12978 Coverage GraphicThe entire survey is adequate to supersede previous data.81.295856888930.507493333381.100136694430.4075200278Survey H12978 was conducted 17NM due East of Nassau Sound in Jacksonville, FL north of the recommended two-way routes for use by vessels traveling into or out of Jacksonville and Fernandina Beach.file:///Q:/Survey/H12978_G343_FH_17/AHB_H12978/Reports/DR/Report/Images/H12978_SurveyLimits.pngH12978 Survey LimitsThe survey limits for H12978 were not accomplished due to the lack of time remaining in the field season. The 13x5 km area on the north side of H12978 is planned to be surveyed during the Fall of 2018.NOAA3United StatesH12978Florida4000017 NM due East of Nassau SoundOPR-G343-FH-17Approaches to Jacksonville, FLJacksonville, FLNOAA Ship Ferdinand Hassler (S250)Multibeam Echo Sounder BackscatterMultibeam Echo SounderMatthew Jaskoski, LCDR/NOAA2017-11-012017-10-25Atlantic Hydrographic BranchUTCNavigable Area2017-01-09metersAny revisions to the Descriptive Report (DR) applied during office processing are shown in red italic text. The DR is maintained as a field unit product, therefore all information and recommendations within this report are considered preliminary unless otherwise noted. The final disposition of survey data is represented in the NOAA nautical chart products. All pertinent records for this survey are archived at the National Centers for Environmental Information (NCEI) and can be retrieved via https://www.ncei.noaa.gov/. Products created during office processing were generated in NAD83 UTM 17N, MLLW. All references to other horizontal or vertical datums in this report are applicable to the processed hydrographic data provided by the field unit.20172017-09-27Data Acquisition and Processing ReportChief of PartyLCDR Matthew Jaskoski2018-02-13Field Operations OfficerLT John Kidd2018-02-13As Chief of Party, field operations for this hydrographic survey were conducted under my direct supervision, with frequent personal checks of progress and adequacy. I have reviewed the attached survey data and reports.All field sheets, this Descriptive Report, and all accompanying records and data are approved. All records are forwarded for final review and processing to the Processing Branch.The survey data meets or exceeds requirements as set forth in the NOS Hydrographic Surveys and Specifications Deliverables, Field Procedures Manual, Letter Instructions, and all HSD Technical Directives. These data are adequate to supersede charted data in their common areas. This survey is complete and no additional work is required with the exception of deficiencies noted in the Descriptive Report.file:///Q:/Survey/H12978_G343_FH_17/AHB_H12978/Reports/DR/Report/Images/H12978_Backscatter.pngH12978 Backscatter OverviewRaw Backscatter was logged as a 7k file. Backscatter was processed in accordance with Hydrographic Technical Directive (HTD) 2017-4.file:///Q:/Survey/H12978_G343_FH_17/AHB_H12978/Reports/DR/Report/Images/H12978_XL_Geographic.pngH12978 Crossline Coveragefile:///Q:/Survey/H12978_G343_FH_17/AHB_H12978/Reports/DR/Report/Images/H12978_XL_stats.pngH12978 Crossline difference statistical analysisTo evaluate crossline agreement, two surfaces of 2-meter grid resolution were created; one from the crossline depths, the other from the mainscheme depths. These two surfaces were differenced using CARIS HIPS & SIPS. The statistical analysis of the differences between the mainscheme and crossline surfaces is shown below. The average difference between the surfaces is 0.01 meters with a standard deviation of 0.11 meters; 95% of nodes agree within +/- 0.21 meters of the mean.Sonar system quality control checks were conducted as detailed in the quality control section of the DAPR.Casts were taken as needed not to exceed once every four hours.file:///Q:/Survey/H12978_G343_FH_17/AHB_H12978/Reports/DR/Report/Images/H12978_SVP_Distribution.pngH12978 sound speed profile locationsA total of 287 MVP casts were taken over the course of the survey. Sound speed corrections were applied in CARIS HIPS/SIPS using the Nearest in Distance Within Time (NIDWT) selection with time frequency of four hours.None ExistThere were no other factors that affected corrections to soundings.H1297640000SW2017NOAA Ship FERDINAND R. HASSLERfile:///Q:/Survey/H12978_G343_FH_17/AHB_H12978/Reports/DR/Report/Images/H12978_H12976_Junction_overview.pngJunction analysis between H12978 and H12976file:///Q:/Survey/H12978_G343_FH_17/AHB_H12978/Reports/DR/Report/Images/H12978_minus_H12976.pngDifference surface statistics for H12978 and H1276The average difference between H12978 and H12977 is 0.00 meters with a standard deviation of 0.12 meters; 95% of the differenced nodes are within +/- 0.23 meters of the mean. Junction overlap ranges from ~150m to ~350m.H1297740000SE2017NOAA Ship FERDINAND R. HASSLERfile:///Q:/Survey/H12978_G343_FH_17/AHB_H12978/Reports/DR/Report/Images/H12978_H12977_Junction_overview.pngJunction analysis between H12978 and H1277file:///Q:/Survey/H12978_G343_FH_17/AHB_H12978/Reports/DR/Report/Images/H12978_minus_H12977.pngDifference surface statistics for H12978 and H1277The average difference between H12978 and H12977 is 0.05 meters with a standard deviation of 0.10 meters; 95% of the differenced nodes are within +/- 0.19 meters of the mean. Junction overlap does not meet the 2017 HSSD specifications of one bathymetric swath width in some areas. Junction overlap ranges from ~180m to ~40m. One area, approximately 35m wide, does not have any overlap. The lack of sufficient overlap was due to a data collection error that was not noticed until the data were post-processed and the ship had departed the survey area.H12978 junctions with H12976 and H12977, which were acquired by the Ferdinand R. Hassler earlier in 2017 and is part of the current project.None ExistThere were no conditions or deficiencies that affected equipment operational effectiveness.0.000.093ERS via VDATUM1.01.00.5S250Complete coverage was achieved per PIs and HSSD 5.2.2.2 via dual head MBES coverage. No areas failed to meet coverage requirements with the exception of the holidays and junction overlap issues detailed above. MBESTeledyne RESONSeaBat 7125 SV2Sound Speed SystemODIM Brooke OceanMVP200Conductivity, Temperature, and Depth SensorODIM Brooke OceanMicro-CTDPositioning and Attitude SystemApplanixPOS MV 320 v5Sound Speed SystemTeledyne RESONSVP 70Refer to the Data Acquisition and Processing Report (DAPR) for a complete description of data acquisition and processing systems, survey vessels, quality control procedures and data processing methods. Additional information to supplement sounding and survey data, and any deviations from the DAPR are discussed in the following sections.3.7737.7S250file:///Q:/Survey/H12978_G343_FH_17/AHB_H12978/Reports/DR/Report/Images/H12978_S250.jpgNOAA Ship Ferdinand R. HasslerNOAA Profile Version 5.710.3.3HIPS/SIPSCaris7.7.6FMGTFledermausVariable ResolutionH12978_MB_VR_MLLWNOAA_VR13.1024.41Complete MBESCARIS VR Surface (CUBE)Variable ResolutionH12978_MB_VR_MLLW_FinalNOAA_VR13.1024.41Complete MBESCARIS VR Surface (CUBE)file:///Q:/Survey/H12978_G343_FH_17/AHB_H12978/Reports/DR/Report/Images/H12978_MB_VR_MLLW.QAv5.density.pngH12978 Data density of the VR finalized surfacefile:///Q:/Survey/H12978_G343_FH_17/AHB_H12978/Reports/DR/Report/Images/H12978_MB_VR_MLLW_Final.QAv5.tvu_qc.pngH12978 Total Vertical Uncertainty in the VR finalized surfaceA density analysis was run using the VR finalized surface to calculate the number of soundings per surface node. The results determined that greater than 99.5% of all nodes contained five or more soundings which meets the data density specifications. A TVU analysis was run using the VR finalized surface. The results determined that greater than 99.5% of nodes passed.Designated SoundingsH12978 contains 9 (nine) designated soundings in accordance with HSSD Section 5.2.1.2.3. Zero (0) designated soundings represent DTONs, and nine (9) designated soundings were selected to accurately represent the seafloor. The designated sounding occurs over two (2) "New" features, seven (7) "Update" features, and are addressed in the Final Feature File.All data reduction procedures conform to those detailed in the DAPR.All sounding systems were calibrated as detailed in the DAPR.No platforms exist for this survey.No new surveys or further investigations are recommended for this area.No overhead features exist for this survey.No present or planned construction or dredging exist within the survey limits.No ferry routes or terminals exist for this survey.No submarine features exist for this survey.Abnormal seafloor and/or environmental conditions were not observed for this survey.No new insets are recommended for this area.No Aids to navigation (ATONs) exist for this survey.No Maritime Boundary Points were assigned for this survey.Two bottom samples as assigned in the OPR-G343-FH-17 Project Reference File (PRF) were not acquired.No bottom samples were acquired as part of H12978 and are not addressed in the final feature file.No channels exist for this survey. There are no designated anchorages, precautionary areas, safety fairways, traffic separation schemes, pilot boarding areas, or channel and range lines within the survey limits.file:///Q:/Survey/H12978_G343_FH_17/AHB_H12978/Reports/DR/Report/Images/H12978_ChartComparison.pngH12978 Chart Comparison - Triangle Rule: Area shown with the largest differences of four (4) feet or less. Large blue soundings are sourced from the ENC. Smaller black soundings are a survey scale sounding selection from final variable resolution surface. Cross hairs above survey scale soundings are flagged to have failed the triangle rule. Survey soundings from H12978 were generated from a variable resolution CUBE surface in CARIS HIPS and SIPS and compared with the soundings from the largest scale Electronic Navigational Charts using the QC Tools 2 triangle rule tool. Contours from H12978 were also generated and visually compared with the charted contours from the largest scale Electronic Navigational Charts. Of the one hundred forty one (141) soundings that were flagged by using the triangle rule, all differences were less than four feet. All charted features were investigated as part of H12978 and are addressed in the Final Feature File. No shoals or potentially hazardous features exist for this survey.Two (2) new wrecks were addressed in the Final Feature File. 2016-09-21449659US3GA10M2016-09-21282016-07-1880000US4FL50M2016-07-18142016-05-0340000US5FL51M2016-05-0334