Final ApprovedH13003_TCARI_Features.tidFinalP136RA2017.tcH13003 shoreline features were tide corrected using a .tid file created in Pydro utilizing the "TCARI TID file via S-57" function then loaded in Caris Notebook. H13003 MBES data were reduced to MLLW using PMVD processing methods. TCARI2017-10-102017-09-26PMVD methods were used to transform between the ellipsoid and water level data. OPR-P136-RA-2017_PMVD_EPSG6334_NAD83-MLLWxGeoid16B.csar was sent to the ship to resolve between the ellipsoid and MLLW. "GPS tides" were then computed using the aforementioned separation model and the corrected GPS-height-to water-level data (SBET). The SBETs were created in reference to NAD83. Refer to the RAINIER 2017 DAPR for additional information.OPR-P136-RA-2017_PMVD_EPSG6334_NAD83-MLLWxGeoid16B.csarERS via Poor Mans VDATUMMean Lower Low Water9457292Kodiak Island, Womens BayShoreline features were reduced to MLLW using traditional tide methods via TCARI. All MBES bathymetry were acquired relative to the ellipsoid and reduced to MLLW via PMVD. Additional information discussing the vertical or horizontal control for this survey can be found in the accompanying HVCR.PILLARMTN_AK2006AC67Woody9715Single BaseNorth American Datum of 1983 (NAD83)The Wide Area Augmentation System (WAAS) was used for real-time horizontal control for this survey. Universal Transverse Mercator (UTM) Zone 5 NorthAll waters in survey area except for H12997 and designated S-57 coverage areasComplete Coverage (refer to HSSD Section 5.2.2.3). Note All MBES acquisition requires backscatter acquistion (refer to HSSD Section 6.2)Example of H13003 NALL determination.SupportFiles\H13003_NALL_Example.pngComplete multibeam echosounder (MBES) coverage was acquired to the inshore limit of hydrography, the Navigable Area Limit Line (NALL). In areas where survey coverage did not reach the 4-meter depth contour nor the assigned sheet limits, it was due to the survey vessel reaching the inshore extent of safe navigation as shown in the figure below. These areas were generally located near shore and were subject to dangerous wave action and other hazards.The area of Chiniak Bay supports the second busiest and third richest fisheries port in Alaska. In 2015, the Port of Kodiak was responsible for 515 million pounds of fish and $138 million dollars of product. Chiniak Bay is the gateway to Kodiak and has a survey vintage of 1933. This area has seen many groundings and near misses due to the number of dangers to navigation and submerged pinnacles that exist in this area. In recent years a number of groundings in and around the area have occurred, the most famous being a 174 foot long Army landing craft that was outbound to deliver goods to a remote village in western Alaska in 2012. This survey will serve to update the nautical charts with modern data to support safe navigation.5047.79802801093.0000000028020209.70000027.702803037.7000000028040173.00000011.30S221074.300000000587.70000039.0002017-06-282017-06-292017-07-022017-07-062017-07-072017-07-082017-07-252017-07-262017-07-272017-07-282017-07-292017-07-312017-08-032017-08-052017-08-062017-08-072017-08-14Pydro derived histogram plot showing HSSD density compliance of H13003 finalized variable-resolution MBES data.SupportFiles\H13003_MB_VR_MLLW_FINAL.QAv5.density.pngThe entire survey is adequate to supersede previous data.Data were acquired within assigned survey limits as required in the Project Instructions and HSSD unless otherwise noted in this report. Pydro QC Tools 2 Grid QA was used to analyze H13003 multibeam echosounder (MBES) data density. The submitted H13003 variable-resolution (VR) surface met HSSD density requirements.H13003 MBES coverage and assigned survey limits.SupportFiles\H13003_Survey_Coverage.pngH13003 survey area as assigned in Project Instructions. Cyan tint shows the coverage area of H13003 relative to Kodiak Island.SupportFiles\H13003_Survey_Area.pngThe survey area is referred to as Williams Reef (sheet 8) within the Project Instructions. The area encompasses approximately 48 square nautical miles extending from south east of Long Island continuing north east of Williams Reef.57.738604152.065657.919798152.307838Data were acquired within survey limits as required in the Project Instructions and HSSD unless otherwise noted in this report.Kodiak Island, AKNOAA Ship RAINIEROPR-P136-RA-17North Coast of Kodiak Island, AKNOAAH1300340000AlaskaWilliam's ReefUnited States8UTCUniversal Transverse Mercator (UTM)meters2017-03-09Multibeam Echo SounderMultibeam Echo Sounder Backscatter2017-06-272017-08-14Navigable AreaJohn Lomnicky, CDR/NOAA2017Pacific Hydrographic BranchJohn J. Lomnicky, CDR/NOAA2018-03-19Commanding Officer, NOAA Ship RainierScott Broo, LT/NOAA2018-03-19Field Operations Officer, NOAA Ship RainierJames B. Jacobson2018-03-19Chief Survey Technician, NOAA Ship RainierChristopher Dunn, ENS/NOAA2018-03-19Junior Officer, NOAA Ship RainierThe survey data meets or exceeds requirements as set forth in the NOS Hydrographic Surveys and Specifications Deliverables Manual, 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.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.As 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.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.Five bottom samples were investigated for this survey; the results are included in the H13003 Final Feature File submitted with this report. Features of navigational significance are discussed in the chart comparison sections above or are included in the H13003 Final Feature File submitted with this report.A comparison was made between H13003 survey data and Electronic Navigation Chart (ENC) US4AK5PM using CUBE surfaces, selected soundings and contours created in Caris.No Maritime Boundary Points were assigned for this survey.Overview of two PA wrecks for sheet H13003.SupportFiles\H13003_PA_Overview.pngNo wreck observed for charted PA wreck near Long Island (HIPS data).SupportFiles\H13003_PA_West_Wreck_HIPS_View.pngUnlikely, but possible location of charted PA wreck near east side of sheet (HIPS data).SupportFiles\H13003_PA_East_Wreck_HIPS_View.pngUnlikely, but possible location of charted PA wreck near east side of sheet (Surface view).SupportFiles\H13003_PA_East_Wreck_Surface_View.pngThere are two charted PA wrecks on H13003 as shown on Figure 45. See Final Feature File for hydrographer's recomendations. H13003 MBES data do not reveal any wreck for the charted PA wreck near Long Island. See Figure 46 H13003 MBES data do not support a strong hypothesis for the charted PA wreck towards the east side of sheet, but cannot positively disprove the wreck location. The highly unlikely, but possible location is the same as the charted location. See Figures 47 and 48 No new navigationally significant features were detected that were not included in the H13003 Final Feature File or elsewhere in this report.Charted 50ftm depth curves generally agree with survey contours.SupportFiles\H13003_Chart_Comp_1.pngCharted 10ftm depth curves generally do not agree with survey contours (see highlights).SupportFiles\H13003_Chart_Comp_2.pngCharted depth curves generally agree with survey contours with 2 exceptions.SupportFiles\H13003_Chart_Comp_3.pngCharted 10ftm depth curves do not agree with survey contours.SupportFiles\H13003_Chart_Comp_4.pngCharted 10ftm depth curves generally agree or are deeper than survey contours. Charted 3ftm depth curves generally agree with survey contours (dangerous exceptions highlighted).SupportFiles\H13003_Chart_Comp_5.pngCharted 10ftm depth contours generally agree with survey contours (exceptions highlighted). Charted 3ftm depth curves generally agree with survey contours.SupportFiles\H13003_Chart_Comp_6.pngCharted 3 and 10 ftm depth curves generally agree with survey contours (exceptions highlighted). Charted 3ftm depth curve in center of bay poorly represents depth.SupportFiles\H13003_Chart_Comp_7.pngCharted depth curves generally are deeper than survey contours (exceptions highlighted).SupportFiles\H13003_Chart_Comp_8.pngCharted depth curves generally are deeper than survey contours (exceptions highlighted). Charted 10ftm depth curve in center right of image does not accurately represent data.SupportFiles\H13003_Chart_Comp_9.pngH13003 survey data coincide with sections of ENC US4AK5PM. A comparison was made between H13003 derived contours (survey contours) and ENC US4AK5PM charted contours (charted depth curves) with the following results: Except as noted below, H13003 three and ten fathoms survey contours were generally inshore of the ENC positions. The 50 fathom survey contours generally agreed with the charted 50 fathom depth curve. There were notable locations where charted depth curves misrepresented shoaler depths. These locations are highlighted in yellow in the following images. Eight Dangers to Navigation (DTON) were identified in the H13003 survey area and submitted to Marine Chart Division's (MCD) Nautical Data Branch. Refer to the H13003_DTON_Report for location and description of these dangers. 2017-04-282017-04-2878900false11US4AK5PMCharted depth curves generally agree with survey contours.SupportFiles\H13003_Chart_Comp_Small_Scale.pngH13003 survey data coincide with sections of ENC US4AK5PM. Most of H13003 can be located within the first ENC discussed, US5AKPM The very small section that lies on the eastern portion of H13003 generally agrees with abutting ENC with insignificant offsets considering the small scale of US3AK5KM.2017-01-192017-02-21350000false22US3AK5KMCharted depth curves generally agree with survey contours (exceptions highlighted).SupportFiles\H13003_Chart_Comp_Large_Scale.pngH13003 survey data coincide with sections of ENC US5AK5EM. Most of H13003 can be located within the first ENC discussed, US5AKPM. The small section of US5AK5EM that lies on the southwestern portion of H13003 contains offsets to abutting ENC US3AK5KM. Charted three and ten fathom depth curves generally agree with survey contours with several exceptions of the charted three fathom depth curve.2017-01-052017-01-0520000false12US5AK5EMNo platforms exist for this survey.Five H13003 QC Flagged Holidays. None are actual holidays. SupportFiles\H13003_Holiday Slide.pngHolidaysFor data quality control on H13003, Pydro QC Tools 2 was used. This program identified 5 potential holes in the data (holidays). Each holiday flag was investigated. All 5 were rocky or foul areas and not an actual gaps in coverage.FliersFor data quality control on H13003, Pydro QC Tools 2 was used. The program identified 57 areas where the CUBE surface honored soundings significantly above or below the surrounding grid nodes (fliers). Each flier flag was investigated using the final VR surface and subset editor. All flagged soundings were accurate depictions of the sea floor and did not represent noise, ephemeral vegetation, or sea life. The QC program had difficulty with small gaps of soundings, steep slopes, cliffs, and valleys. The following images are QC flier flag locations including an example of the underlying HIPS data. The images were separated into offshore (north, central, south, and east) and near shore of Long Island from south to north.No prior survey comparisons exist for this survey.No new insets are recommended for this area.No new surveys or further investigations are recommended for this area.Limited shoreline verification was conducted in accordance with applicable sections of NOAA HSSD and FPM using the Project Reference File (PRF) and Composite Source File (CSF) provided with the Project Instructions. In the field, all assigned features that were safe to approach, were addressed as required with S-57 attribution and recorded in the H13003_Final_Feature_File (FFF) to best represent the features at chart scale. This file also includes new features found in the field as well as recommendations to update, retain or delete assigned features. No present or planned construction or dredging exist within the survey limits.No overhead features exist for this survey.Two submarine cables were charted in the northern region of H13003. No cables were detectable above sea floor.There are no significant features in the H13003 survey area that were not discussed elsewhere in this report.No ferry routes or terminals exist for this survey.There is one ATON on sheet H13003. The ATON characteristics were listed as G"1" Fl G 4s WHIS 00.4+(03.6). This ATON was observed in the field and appears to be serving its intended purpose.None ExistThere were no conditions or deficiencies that affected equipment operational effectiveness.Mid-Water Column Acoustic ScatterIn some nearshore areas, marine vegetation inhibited accurate bottom detection. In cases where it was possible to discern the true bottom from marine vegetation, the obscuring soundings were rejected. However, when unable to clearly distinguish between the apparent seafloor and vegetation, no soundings were rejected.Sonar system quality control checks were conducted as detailed in the quality control section of the DAPR.Junction survey area between H13003 and H10913.SupportFiles\H13003_Junction_H10913.pngPydro derived plot showing percentage-pass value of H13003 MBES data to H10913 MBES data.SupportFiles\H13003_diff_H10913_4M_fracAllowErr_Freq.pngPydro derived plot showing the statistical results of a comparison between H13003 MBES data to H10913 MBES data.SupportFiles\H13003_diff_H10913_4M_depth_delta.pngPydro derived plot showing node depth vs. allowable error fraction of H13003 MBES data to H10913 MBES data.SupportFiles\H13003_diff_H10913_4M_fracAllowErr_vsDepth.pngThe junction with survey H10913 encompassed 0.24 square nautical miles along the southwestern boundary of H13003. The comparison was made using the Pydro tool "Compare Grids" application. The surfaces used for this comparison were 4-meter CUBE surfaces. Analysis of the difference surface indicate a standard deviation of 0.62 meters. For the respective depths, the difference surface was compared to the allowable TVU standards specified in the HSSD. In total, 97% of the depth differences between H13003 and junction survey H10913 were within allowable uncertainties. H13003 is shoaler by 0.58 meters on average in the junction area with H10913.NOAA Ship RAINIERSWH10913100001999Junction survey area between H13003 and H12320.SupportFiles\H13003_Junction_H12320.pngPydro derived plot showing percentage-pass value of H13003 MBES data to H12320 MBES data.SupportFiles\H13003_diff_H12320_8M_fracAllowErr_Freq.pngPydro derived plot showing the statistical results of a comparison between H13003 MBES data to H12320 MBES data.SupportFiles\H13003_diff_H12320_8M_depth_delta.pngPydro derived plot showing node depth vs. allowable error fraction of H13003 MBES data to H12320 MBES data.SupportFiles\H13003_diff_H12320_8M_fracAllowErr_vsDepth.pngThe junction with survey H12320 encompassed 1.08 square nautical miles along the northern boundary of H13003. The comparison was made using the Pydro tool "Compare Grids" application. The surfaces used for this comparison were 8-meter CUBE surfaces. The 8-meter surface provided for H12320 only contained depths below 72 meters. This is the reason for the gaps in the junction area on the western side. Analysis of the difference surface indicate a standard deviation of 0.45 meters. For the respective depths, the difference surface was compared to the allowable TVU standards specified in the HSSD. In total, 99.5+% of the depth differences between H13003 and junction survey H12320 were within allowable uncertainties. H13003 is deeper by 0.40 meters on average in the junction area with H12320.NOAA Ship FAIRWEATHERNH12320400002011Junction survey area between H13003 and H12996.SupportFiles\H13003_Junction_H12996.pngPydro derived plot showing percentage-pass value of H13003 MBES data to H12996 MBES data.SupportFiles\H13003_diff_H12996_2M_fracAllowErr_Freq.pngPydro derived plot showing the statistical results of a comparison between H13003 MBES data to H12996 MBES data.SupportFiles\H13003_diff_H12996_2M_depth_delta.pngPydro derived plot showing node depth vs. allowable error fraction of H13003 MBES data to H12996 MBES data.SupportFiles\H13003_diff_H12996_2M_fracAllowErr_vsDepth.pngThe junction with survey H12996 encompassed 0.73 square nautical miles along the western boundary of H13003. The comparison was made using the Pydro tool "Compare Grids" application. The surfaces used for this comparison were 2-meter CUBE surfaces. Analysis of the difference surface indicate a standard deviation of 0.29 meters. For the respective depths, the difference surface was compared to the allowable TVU standards specified in the HSSD. In total, 98% of the depth differences between H13003 and junction survey H1996 were within allowable uncertainties. H13003 is shoaler by 0.20 meters on average in the junction area with H12996.NOAA Ship RAINIERWH12996400002017Junction survey area between H13003 and H12997.SupportFiles\H13003_Junction_H12997.pngJunction survey area between H13003 and H12997 (southern insert).SupportFiles\H13003_Junction_H12997_Insert1.pngJunction survey area between H13003 and H12997 (northern insert).SupportFiles\H13003_Junction_H12997_Insert2.pngPydro derived plot showing percentage-pass value of H13003 MBES data to H12997 MBES data.SupportFiles\H13003_diff_H12997_4M_fracAllowErr_Freq.pngPydro derived plot showing the statistical results of a comparison between H13003 MBES data to H12997 MBES data.SupportFiles\H13003_diff_H12997_4M_depth_delta.pngPydro derived plot showing node depth vs. allowable error fraction of H13003 MBES data to H12997 MBES data.SupportFiles\H13003_diff_H12997_4M_fracAllowErr_vsDepth.pngThe junction with survey H12997 encompassed 0.17 square nautical miles along the boundary of H13003 north and south of Long Island. The comparison was made using the Pydro tool "Compare Grids" application. The surfaces used for this comparison were 4-meter CUBE surfaces. Analysis of the difference surface indicate a standard deviation of 0.31 meters. For the respective depths, the difference surface was compared to the allowable TVU standards specified in the HSSD. In total, 95% of the depth differences between H13003 and junction survey H12997 were within allowable uncertainties. H13003 is shoaler by 0.68 meters on average in the junction area with H12997.NOAA Ship RAINIERSWH12997400002017Junction survey area between H13003 and H13001.SupportFiles\H13003_Junction_H13001.pngPydro derived plot showing percentage-pass value of H13003 MBES data to H13001 MBES data.SupportFiles\H13003_diff_H13001_8M_fracAllowErr_Freq.pngPydro derived plot showing the statistical results of a comparison between H13003 MBES data to H13001 MBES data.SupportFiles\H13003_diff_H13001_8M_depth_delta.pngPydro derived plot showing node depth vs. allowable error fraction of H13003 MBES data to H13001 MBES data.SupportFiles\H13003_diff_H13001_8M_fracAllowErr_vsDepth.pngThe junction with survey H13001 encompassed 1.48 square nautical miles along the southern boundary of H13003. The comparison was made using the Pydro tool "Compare Grids" application. The surfaces used for this comparison were 8-meter CUBE surfaces. Analysis of the difference surface indicate a standard deviation of 0.60 meters. For the respective depths, the difference surface was compared to the allowable TVU standards specified in the HSSD. In total, 98% of the depth differences between H13003 and junction survey H13001 were within allowable uncertainties. H13003 is shoaler by 0.48 meters on average in the junction area with H10913.NOAA Ship RAINIERSH13001400002017H13003 sound speed cast locations.SupportFiles\H13003_Cast_Locations.pngSeventy four sound speed profiles were acquired for this survey at discrete locations within the survey area at least once every four hours, when significant changes in surface sound speed were observed, or when operating in a new area. Sound speed profiles were acquired using Sea-Bird 19plus SEACAT Profilers and the Odim Brooke Ocean MVP 200 Moving Vessel Profiler. All casts were concatenated into a master file and applied to MBES data using the "Nearest distance within time" (4 hours) profile selection method.Pydro derived histogram plot showing TVU compliance of H13003 finalized multi-resolution MBES data.SupportFiles\H13003_MB_VR_MLLW_FINAL.QAv5.tvu_qc.pngTotal Propagated Uncertainty (TPU) values for survey H13003 were derived from a combination of fixed values for equipment and vessel characteristics, as well as from field assigned values for sound speed uncertainties. Tidal uncertainty was accounted for by examining the Poor Man's VDATUM (PMVD) and statistically determining a measured value. See the 2017 DAPR for further information. A measured uncertainty of 0.234327 meters was entered to account for PMVD processing methods. See PMVD discussion and methods described by Jack Riley (HSTP) in the email “PMVD Uncertainty Value” in the supplemental survey records and correspondence. For other contemporary surveys, the ellipsoidal referenced zoned tides (ERZT) method outlined in the 2017 DAPR was used to account for tidal uncertainties. The separation model generated using ERZT for H13003 contained unexplained errors. The PMVD derived separation model did not exhibit these problems and was therefore utilized for final reduction to MLLW. In addition to the usual a priori estimates of uncertainty, some real-time and post-processed uncertainty sources were also incorporated into the depth estimates of this survey. Real-time uncertainties from MBES sonars were recorded and applied during post-processing. Applanix TrueHeave (POS) files, which record estimates of heave uncertainty, were also applied during post-processing. Finally, the post-processed uncertainties associated with vessel roll, pitch, yaw and position were applied in CARIS HIPS using SBET/RMS files generated using POSPac software. Uncertainty values of submitted finalized grids were calculated in CARIS using "Greater of the Two" of uncertainty and standard deviation (scaled to 95%). Pydro QC tools 2 were used to analyze H13003 TVU compliance; a histogram plot of the results is shown below.S221N/A10.052801, 2802, 2803, 28043N/A0.150.2343270ERS via PMVDAll equipment and survey methods were used as detailed in the DAPR.H13003 crosslines surface overlaid on mainscheme track lines.SupportFiles\H13003_XL_Overlay.pngPydro derived plot showing percentage-pass value of H13003 mainscheme to crossline data.SupportFiles\H13003_MS_diff_XL_VR_fracAllowErr_Freq.pngPydro derived plot showing the statistical results of a comparison between H13003 mainscheme to crossline data.SupportFiles\H13003_MS_diff_XL_VR_depth_delta.pngPydro derived plot showing node depth vs. allowable error fraction of H13003 mainscheme to crossline data.SupportFiles\H13003_MS_diff_XL_VR_fracAllowErr_vsDepth.pngMultibeam crosslines were acquired using RAINIER launches 2802 and 2804 across all depth ranges, water masses and boat days that were practical; they are adequate for verifying and evaluating the internal consistency of survey data. Some crosslines were acquired prior to mainscheme acquisition, on headings roughly orthonormal to the assumed orientation of the mainscheme lines. However, the actual azimuth of mainscheme lines was often dictated by the sea conditions encountered at the time of acquisition. Thus, some crosslines were not collected at least 45° to mainscheme. The minimum 4% crossline requirement was still met by collecting a total of 6.64% overlapping coverage lines most of which fall within the defined specifications of crosslines. A VR CUBE surface was created using only H13003 mainscheme, and a second VR CUBE surface was created using only crosslines. Analysis was performed using the Compare Grids function in Pydro Explorer using these two surfaces. For its respective depths, the difference surface was compared to IHO allowable Total Vertical Uncertainty (TVU) standards. 99.5+% of nodes met allowable uncertainties, for additional results, see plots below.Submitted surfaces were generated using the recommended parameters for depth-based (Ranges) Caris variable-resolution bathymetric grids as specified in HSTD 2017-2. The resolution values in the table above are not accurate: the XML-DR schema used to generate this report did not accommodate variable resolution grids. The "999" value was entered merely as a place holder. Eight critical soundings were created for this survey. All eight were identified as dangers to navigation.0.6256.1NOAA_VR999CUBEH13003_MB_VR_MLLWComplete MBES0.6256.1NOAA_VR999CUBEH13003_MB_VR_MLLW_FINALComplete MBESCARIS10.2 10.3 10.3.1HIPS and SIPSNOAA Extended Attribute Files V_5_6.All data reduction procedures conform to those detailed in the DAPR.All sounding systems were calibrated as detailed in the DAPR.Raw Backscatter was logged as a .7k file and has been sent to the Processing Branch. Backscatter was not processed by the field unit.Refer 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.KongsbergEM710MBESTeledyne ResonSeaBat 7125-BMBESTeledyne ResonSeaBat 7125 SV2MBESTeledyne ResonSVP70/ SVP71Surface Sound Speed ProbesSea-Bird ElectronicsSBE 19Plus SeaCat ProfilerConductivity, Temperature, and Deapth SensorApplanixPOS M/V v5Positioning and Attitude SystemOdim Brooke OceanMVP 200 Moving Vessel ProfilerSound Speed SystemNOAA Ship RAINIER with survey launches 2803 and 2802 in view.SupportFiles\S221_Rainier.jpg28011.18.828021.18.828031.18.828041.18.819050.355.719070.355.7S2214.770.4All the survey data for H13003 was acquired by survey launches 2801 RA-4, 2802 RA-5, 2803 RA-3, RA-6 2804, and the NOAA Ship RAINIER S221. The launches and ship acquired the MBES soundings, sound velocity profiles and bottom samples. The skiffs (1907, 1905) conducted all shoreline verification.