OPR-P133-RA-12Chirikof Island and Vicinity, AKChirikof Island and Vicinity, AKNOAA Ship RAINIERH124549Offshore NE Chirikof IslandAlaskaUnited States400002012Richard T. Brennan, CDR/NOAANavigable Area2012-05-152012-06-192012-08-31Multibeam Echo SounderMultibeam Echo Sounder BackscattermetersMean Lower Low WaterfathomsMean Lower Low WaterUniversal Transverse Mercator (UTM)UTCPacific Hydrographic BranchThe project area is referred to as Sheet 9: Offshore NE Chirikof Island within the Project Instructions. The area is offshore of the northeast corner of Chirikof Island in the Gulf of Alaska (Figure 1).55.9791472222155.47170277855.8470166667155.3134777781H12454 survey limits.file:///K:/Projects/2012_Projects/OPR-P133-RA-12,%20Chirikof%20Island/Surveys/H12454/Data_to_Submit_DO_NOT_USE/Processed/Multimedia/1_H12454%20Survey%20Limits.jpgThis project is being conducted in support of NOAA's Office of Coast Survey to provide contemporary hydrographic data in order to update the nautical charting products and reduce the survey backlog within the area. The need for nautical chart updates are due to an increasing number of passenger vessels, tour vessels and large fishing fleets in the area. In addition, the data would be used to create DTM maps in support of the efficiencies in longline and pot fisheries, while minimizing habitat disruption.The entire survey is adequate to supersede previous data.Data acquired on survey H12454 met complete multibeam coverage requirements, including the 5 soundings per node data density requirements outlined in Section 5.2.2.2 of the HSSDM (Figure 2). Overall, 99.9% of the nodes of H12454 are populated with 5 soundings or greater per node (Figure 3).2H12454 data density.file:///K:/Projects/2012_Projects/OPR-P133-RA-12,%20Chirikof%20Island/Surveys/H12454/Data_to_Submit_DO_NOT_USE/Processed/Multimedia/2_H12454%20Data%20Density.jpg3Summary table showing the percentage of nodes satisfying the 5 node sounding density requirements, sub-divided by the appropriate depth ranges. Note: The final row has a unit of square meters, and sums the number of different resolution nodes into a common unit of area.file:///K:/Projects/2012_Projects/OPR-P133-RA-12,%20Chirikof%20Island/Surveys/H12454/Data_to_Submit_DO_NOT_USE/Processed/Multimedia/3_H12454%20Data%20Density%20Chart.jpgSurvey limits were acquired in accordance with the requirements in the Project Instructions and the Hydrographic Surveys Specifications and Deliverables Manual (HSSDM).4Acquired survey coverage overlaid on Chart 16587.file:///K:/Projects/2012_Projects/OPR-P133-RA-12,%20Chirikof%20Island/Surveys/H12454/Data_to_Submit_DO_NOT_USE/Processed/Multimedia/4_H12454_SurveyCoverage.jpgComplete multibeam echosounder (MBES) coverage was achieved within the limits of hydrography specified in the Project Instructions with the exception of multiple small holidays in the southeastern area of deeper water. These holidays are due to low data density (Figure 5). One additional holiday exists at 55/52/27.1 N 155/24/17.5 W due to the failure to anticipate a narrowing swath width as the bottom rapidly shoaled (Figure 6). These holidays do not exceed 3x3 grid nodes in size and were investigated to ensure that least depths were found. In all cases, the significance of the holidays is minimal given the depth of the seafloor in the given area.5H12454 holidays due to low data density.file:///K:/Projects/2012_Projects/OPR-P133-RA-12,%20Chirikof%20Island/Surveys/H12454/Data_to_Submit_DO_NOT_USE/Processed/Multimedia/5_H12454_Holiday2.jpg6H12454 holiday due to sudden shoaling.file:///K:/Projects/2012_Projects/OPR-P133-RA-12,%20Chirikof%20Island/Surveys/H12454/Data_to_Submit_DO_NOT_USE/Processed/Multimedia/6_H12454_Holiday1.jpg2012-06-192012-07-242012-07-252012-08-072012-08-082012-08-102012-08-112012-08-222012-08-232012-08-242012-08-302012-08-3160044.51S2210311.200000002801099.40000014.302802053.900000002803066.7000000028040111.80000062.000642.90000076.308.4Shoreline was investigated in accordance with the Project Instructions and the HSSDM.Bottom samples were acquired in accordance with the Project Instructions with the exception of one assigned at position 55-57-07.7.N 155-21-14.6 W. This bottom sample was acquired 1.3 nm northeast of the assigned location in order to be collected on the charted bottom sample (Figure 7). 7Locations of H12454 bottom samples. Assigned samples are shown in red and acquired samples are shown in blue.file:///K:/Projects/2012_Projects/OPR-P133-RA-12,%20Chirikof%20Island/Surveys/H12454/Data_to_Submit_DO_NOT_USE/Processed/Multimedia/7_H12454_Bottom%20Samples.jpgRefer 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.S-22123116.42801 (RA-4)283.52802 (RA-5)283.52803 (RA-3)283.52804 (RA-6)283.5Data was acquired by the RAINIER and her four survey launches (2801, 2802, 2803, and 2804). The vessels acquired MBES data, sound velocity profiles, and bottom samples.KongsbergEM-710MBESReson7125MBESApplanixPOS-MV V4Vessel Attitude and Positioning SystemSeabirdSBE 19Conductivity, Temperature, and Depth SensorSeabirdSBE 19 PlusConductivity, Temperature, and Depth SensorOdim Brooke Ocean (Rolls Royce Group)MVP 200Conductivity, Temperature, and Depth SensorOdim Brooke Ocean (Rolls Royce Group)MVP 30Conductivity, Temperature, and Depth SensorReson SVP 70Sound Speed SystemResonSVP 71Sound Speed SystemMultibeam crosslines were acquired using the Reson 7125 on vessel 2801 (RA-4) and 2804 (RA-6). 76.3 NM of crosslines were acquired, which accounted for 11.8% of mainscheme hydrography. A 2-meter CUBE surface was created using strictly the mainscheme lines, while a second 2-meter CUBE surface was created using only crosslines, from which a surface difference was generated at a 2-meter resolution (Figure 8). Statistics were then derived from the difference surface and are shown in Figure 9. The average difference between the depths derived from mainscheme and crosslines was 0.07 meters (crosslines being deeper) with a standard deviation of 0.25 meters.8Crossline difference surface and distribution in meters for H12454. file:///K:/Projects/2012_Projects/OPR-P133-RA-12,%20Chirikof%20Island/Surveys/H12454/Data_to_Submit_DO_NOT_USE/Processed/Multimedia/8_H12454_Crossline_Comparison_image.jpg9Difference surface statistics between mainscheme survey and crosslines for H12454. Average difference was 0.07 meters, with crosslines being the deeper of the two.file:///K:/Projects/2012_Projects/OPR-P133-RA-12,%20Chirikof%20Island/Surveys/H12454/Data_to_Submit_DO_NOT_USE/Processed/Multimedia/9_H12454_Crosline_Comparison_Stats.jpg00.14S2211.0528013.1528023.1528033.1528043.15Uncertainty values of submitted finalized grids were calculated in CARIS using the "Greater of the Two" of among total propagated uncertainty and standard deviation (scaled to 95%). To visualize the locations in which accuracy requirements were met for each finalized surface, a custom "IHOness" layer was created, based on the difference between calculated uncertainty of the nodes and the allowable IHO uncertainty (Figure 10). To quantify the extent to which accuracy requirements were met, the preceding "IHOness" layers were queried within CARIS and then exported to Excel (Figure 11). Note: Caris' own QC Surface Report tool was not fully used as the software would crash on the finer resolution surfaces (though the two methods produced the same results for surfaces in which both the Surface Report and the layer query were used). Overall, 100.0% of survey H12454 met the accuracy requirements stated in the HSSDM. 10H12454 met the threshold IHO standards for accuracy.file:///K:/Projects/2012_Projects/OPR-P133-RA-12,%20Chirikof%20Island/Surveys/H12454/Data_to_Submit_DO_NOT_USE/Processed/Multimedia/10_H12454_IHO_image.jpg11Summary table showing the percentage of nodes satisfying the indicated IHO accuracy level, sub-divided by the appropriate depth ranges.file:///K:/Projects/2012_Projects/OPR-P133-RA-12,%20Chirikof%20Island/Surveys/H12454/Data_to_Submit_DO_NOT_USE/Processed/Multimedia/IHOness_table.jpgThree junction comparisons were completed for H12454. All three junctioning surveys (H12449, H12450, H12455) were acquired concurrently with this survey (Figure 12). Depth comparisons were performed using the CARIS difference surfaces and Subset Editor.H12449400002012NOAA Ship RAINIERSWOverlap with survey H12449 was a 180 by 150 meter area on the southwestern boundary of H12454. Depths in the junction area are approximately 27 meters. A difference surface analysis (Figure 13) showed H12454 to be, on average, 0.06 meters deeper than H12449 with a standard deviation of 0.08 meters (Figure 14). Migrating sand waves observed in this area are the likely explanation for the small amount of differences observed. 12H12454 junction overview.file:///K:/Projects/2012_Projects/OPR-P133-RA-12,%20Chirikof%20Island/Surveys/H12454/Data_to_Submit_DO_NOT_USE/Processed/Multimedia/12_H12454_Junction_Overview.jpg13Junction between H12454 (yellow) and H12449 (orange) in meters on chart 16587.file:///K:/Projects/2012_Projects/OPR-P133-RA-12,%20Chirikof%20Island/Surveys/H12454/Data_to_Submit_DO_NOT_USE/Processed/Multimedia/13_H12454_H12449_Juncion_image.jpg14Difference surface statistics between junction of H12454 and H12449 2-meter surfaces.file:///K:/Projects/2012_Projects/OPR-P133-RA-12,%20Chirikof%20Island/Surveys/H12454/Data_to_Submit_DO_NOT_USE/Processed/Multimedia/14_H12454_H12449_Juncion_Stats.jpgH12450400002012NOAA Ship RAINIERWOverlap with survey H12450 was 75 to 175 meters wide along the western boundary of H12454. Depths in the junction area are approximately 20 to 37 meters (Figure 15). A difference surface analysis showed H12450 to be, on average, 0.07 meters deeper than H12454 with a standard deviation of 0.13 meters (Figure 16). As shown in Figure 15, some of the areas of higher difference are due to either artifacts in the ship MBES data (refer to Section - B.2.5.1 Kongsberg EM710 Data Artifact) (northern inset) or shifting sand waves (southern inset).15Junction between H12454 (yellow) and H12450 (orange) in meters on chart 16587. Insets show sources of difference; ship data artifacts in the north and sand waves in the south.file:///K:/Projects/2012_Projects/OPR-P133-RA-12,%20Chirikof%20Island/Surveys/H12454/Data_to_Submit_DO_NOT_USE/Processed/Multimedia/15_H12454_H12450_Juncion_image.jpg16Difference surface statistics between junction of H12454 and H12450 2-meter surfaces.file:///K:/Projects/2012_Projects/OPR-P133-RA-12,%20Chirikof%20Island/Surveys/H12454/Data_to_Submit_DO_NOT_USE/Processed/Multimedia/16_H12454_H12450_Juncion_Stats.jpgH12455400002012NOAA Ship RAINIERSOverlap with survey H12455 was 150 to 600 meters wide along the southern boundary of H12454. Depths in the junction area are approximately 26 to 67 meters (Figure 17). A difference surface analysis showed H12455 to be, on average, 0.17 meters deeper than H12454 with a standard deviation of 0.16 meters (Figure 18). As shown in Figure 17, some of the areas of higher difference are due to either sound velocity artifacts (eastern enlargement) or shifting sand waves (western enlargement). Note that the sound velocity artifacts observed were found in data from H12455 at the time the junction comparison was conducted and not H12454. 17Junction between H12454 (yellow) and H12455 (orange) in meters on Chart 16587. Enlargements show sources of difference; sound velocity artifacts in the east and sand waves in the west.file:///K:/Projects/2012_Projects/OPR-P133-RA-12,%20Chirikof%20Island/Surveys/H12454/Data_to_Submit_DO_NOT_USE/Processed/Multimedia/H12454_H12455_Juncion_image.jpg18Difference surface statistics between junction of H12454 and H12455 2-meter surfaces.file:///K:/Projects/2012_Projects/OPR-P133-RA-12,%20Chirikof%20Island/Surveys/H12454/Data_to_Submit_DO_NOT_USE/Processed/Multimedia/H12454_H12455_Juncion_Stats.jpgSonar system quality control checks were conducted as detailed in the quality control section of the DAPR.Kongsberg EM710 Data ArtifactAt the time of this writing, there is a suspected integration problem within RAINIER's workflow between acquired EM710 multibeam data (integrated with an Applanix POS M/V), and later processing said data within CARIS HIPS. The result is an apparent oscillation of the outerbeams, which in some cases exceeded ±0.25 meters in magnitude. For a further discussion, refer to Section B.3.1.1 - Processing EM710 data with CARIS SVC Module.Conductivity Sensor Malfunction in Moving Vessel ProfilerSeveral sound speed casts collected by the ship were not applied to the data because of anomalous salinity profiles (Figure 19). In the erroneous casts, the MVP did not acquire the correct salinity, skewing the sound speed profile. Casts where the conductivity was less than historic ranges and significantly less than the subsequent casts were rejected.19H12454 representative inaccurate salinity profile.file:///K:/Projects/2012_Projects/OPR-P133-RA-12,%20Chirikof%20Island/Surveys/H12454/Data_to_Submit_DO_NOT_USE/Processed/Multimedia/H12454_Bad_Cast.jpgSound speed profiles were acquired using the SBE-19 and SBE-19 plus CTDs at discrete locations within the survey area approximately once every four hours, or when surveying in a new area. Casts were aggregated into one master file for the entire survey and applied to all lines using the "Nearest in distance within time (4 hours)" selection method. This allowed the nearest cast to always be applied in cases where vessels were working in close proximity. On two separate days, two of NOAA Ship RAINIER's launches conducted acquisition concurrently in an experiment to test efficiency of a newly developed acquisition method. This new method involved the vessels acquiring data to be in close proximity to each other and in formation. Figure 20 shows mainscheme lines from DN223 (August 10) collected by 2802 (RA-5) and 2804 (RA-6). Coverage maps were exchanged from launch to launch via FreeWave radio allowing the vessels to acquire data by alternating lines. Due the the close proximity of acquisition, the Moving Vessel Profiler casts acquired by 2804 (RA-6) were applied to data collected by both launches on two separate days; 24 casts for 2801 (RA-4) on DN220 and 27 casts for 2802 (RA-5) on DN223. 20H12454 lines showing acquisition vessels running in formation.file:///K:/Projects/2012_Projects/OPR-P133-RA-12,%20Chirikof%20Island/Surveys/H12454/Data_to_Submit_DO_NOT_USE/Processed/Multimedia/H12454_Formation.jpgAll Equipment and survey methods were used as detailed in the DAPR.B.3.1.1 - Processing EM710 data with CARIS SVC Module At the time of this writing, both Kongsberg and CARIS have confirmed there is an error in the HIPS implementation of the Simrad Sound Velocity Correction (SVC) module, particularly when True Heave is applied to EM710 data (see Supplemental Correspondences - EM710_SV_Error_in_CARIS.pdf and TrueHeave_Error_in_CARIS.pdf). To circumvent this problem, all EM710 data was sound velocity corrected using a custom Simrad SVC-free license, which forced HIPS to use the CARIS (technically, OMG) SVC module. Figure 21 shows a comparison between the best results achieved when using the Simrad SVC module (top), and CARIS SVC module (bottom). It should be noted that a residual artifact still persists within the outerbeams (see Section B.2.5.1 - Kongsberg EM710 Data Artifact) and is being actively investigated by both ship's personnel and appropriate groups ashore.21Comparison of gridded data when using the Simrad (top) versus CARIS (bottom) sound velocity correction module. Surfaces are not from survey H12454, but are representative of the artifact.file:///K:/Projects/2012_Projects/OPR-P133-RA-12,%20Chirikof%20Island/Surveys/H12454/Data_to_Submit_DO_NOT_USE/Processed/Multimedia/B_3_1_1_Simrad_SVC_2.pngAll sounding systems were calibrated as detailed in the DAPR.Backscatter was logged as a 7k or .all file and submitted to NGDC. Backscatter is not included with the data submitted to the Branch.NOAA Catalogue Control Version 5.2 and NOAA Profile Product Version 2.0.This survey was processed using CARIS HIPS 7.1 - Service Pack 2 - Hotfix 6. To prevent the use of the Simrad SVC, a custom HIPS license (CARIS_Cwsite1_26_04_2013_14_12_21.sit) was used. All other software programs and versions used for data processing are described in the DAPR.H12454_2mCUBE21880NOAA_2mComplete MBESH12454_4mCUBE41880NOAA_4mComplete MBESH12454_2m_18to40_FinalCUBE21840NOAA_2mComplete MBESH12454_4m_36to80_FinalCUBE43680NOAA_4mComplete MBESH12454_4m_CombinedCUBE41880NOAA_4mComplete MBES Additional information discussing the vertical or horizontal control for this survey can be found in the accompanying HVCR.Mean Lower Low WaterDiscrete ZoningSand Point, AK94594509459450.tidFinal ApprovedP133RA2012CORP.zdfFinal2012-09-012012-09-10North American Datum of 1983 (NAD83)Single BaseChirikof Island, AKN/AIn conjunction with this project, a GPS base station was established by RAINIER personnel on Chirikof Island. Vessel kinematic data was post-processed using Applanix POSPac processing software with Single Base processing methods described in the DAPR. PPK SBETs were applied to all survey data from DN171 (June 19) onward with exception to DN243 (August 30) which is addressed below. Spot checks in various locations showed improvement in positioning alignment between vessels and days after the application of SBETs.On DN243 (August 30), RAINIER personnel removed the base station set up on Chirikof Island prior to acquisition for that day in preparation for concluding survey operations and departing the survey area. Therefore, attitude data was processed using precise point positioning (PPP) and the resulting SBET was applied to data from this day. The data does not display any artifacts attributable to the SBETs, and positioning accuracy relative to PPK processed lines appears to be improved after application of PPP SBETs in spot CARIS Subset Editor comparisons.Kodiak (313 kHz)Cold Bay (289 kHz)Kenai (310 kHz)16587254113500022012-022012-10-302012-10-27A comparison was performed with Chart 16587 (1:135000) using a CARIS sounding layer based on the 1-meter surface from H12454 and a contour layer based on an 8-meter surface generalized to 135 meters to correspond with the chart scale and eliminate small contour areas. All soundings were examined for agreement to within 1 fathom. The data does not compare well with the charted soundings. Locations with sounding disagreements of greater than 1 fathom have been highlighted with red circles for areas that have shoaled and green circles for areas that have deepened (Figure 22). Areas that agreed to within 1 fathom are highlighted with black circles. On average, areas that are shoaler than charted soundings are approximately 3-4 fathoms shoaler and areas that are deeper than charted soundings are approximately 3-4 fathoms deeper. There is a 10 fathom sounding in the northwest corner of H12454 that will produce a new charted 10-fathom contour (Figure 23). It is recommended that H12454 data supersede all charted depths on Chart 16587. 22H12454 chart comparison.file:///K:/Projects/2012_Projects/OPR-P133-RA-12,%20Chirikof%20Island/Surveys/H12454/Data_to_Submit_DO_NOT_USE/Processed/Multimedia/H12454_RNC_Chart_Comparison.jpg23H12454 10-fathom contour in northwest corner.file:///K:/Projects/2012_Projects/OPR-P133-RA-12,%20Chirikof%20Island/Surveys/H12454/Data_to_Submit_DO_NOT_USE/Processed/Multimedia/H12454_10Fathom.jpgUS4AK5XM13500012011-01-312011-01-31falseA comparison was performed with ENC US4AK5XM using the same methods as the comparison with raster Chart 16587 above (Figure 24). In all cases, soundings on US4AK5XM were observed to be shifted between 900-1,000 meters eastward from RNC soundings (Figure 25). Regardless of shift, the survey data does not compare well with the charted soundings on the ENC. It is recommended that H12454 data supersede all charted depths on ENC US4AK5XM. 24Chart comparison between H12454 digital data and US4AK5XM.file:///K:/Projects/2012_Projects/OPR-P133-RA-12,%20Chirikof%20Island/Surveys/H12454/Data_to_Submit_DO_NOT_USE/Processed/Multimedia/H12454_ENC_Chart_Comparison.jpg25Chart comparison between raster 16587 and US4AK5XM. Soundings on ENC (red) are shifted 900-1,000 meters eastward relative to RNC soundings (gray).file:///K:/Projects/2012_Projects/OPR-P133-RA-12,%20Chirikof%20Island/Surveys/H12454/Data_to_Submit_DO_NOT_USE/Processed/Multimedia/H12454_ENC_RNC_Comparison.jpgNo AWOIS items exist for this survey.No charted features exist for this survey.No uncharted features exist for this survey.No Danger to Navigation Reports were submitted for this survey.No shoals or potentially hazardous features exist for this survey.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.No features exist for H12454. Bottom samples were included in the Final Feature File submitted with the digital data. No prior survey comparisons exist for this survey.Aids to navigation (ATONs) do not exist for this survey.Overhead features do not exist for this survey.Submarine features do not exist for this survey.No ferry routes or terminals exist for this survey.No platforms exist for this survey.No significant features exist for this survey.There is no present or planned construction or dredging within the survey limits.No new surveys or further investigations are recommended for this area.No new insets are recommended for this area.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.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 Manual, Field Procedures Manual, Standing and 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.Richard T. Brennan, CDR/NOAACommanding Officer, NOAA Ship RAINIER2013-05-20Michael O. Gonsalves, LT/NOAAField Operations Officer, NOAA Ship RAINIER2013-05-20James B. JacobsonChief Survey Technician, NOAA Ship RAINIER2013-05-20John R. Kidd, ENS/NOAAJunior Offiecer, NOAA Ship RAINIER2013-05-20file:///K:/Projects/2012_Projects/OPR-P133-RA-12,%20Chirikof%20Island/Surveys/H12454/Descriptive_Report/Appendices/IV%20Tides_and_Water_Levels/Request%20for%20Final%20Approved%20Water%20Levels/Final%20Tide%20Request%20OPR-P133-RA-12,%20Sheet%20H12454.pdffile:///K:/Projects/2012_Projects/OPR-P133-RA-12,%20Chirikof%20Island/Surveys/H12454/Descriptive_Report/Appendices/IV%20Tides_and_Water_Levels/Request%20for%20Final%20Approved%20Water%20Levels/H12454_Tides_Request.midfile:///K:/Projects/2012_Projects/OPR-P133-RA-12,%20Chirikof%20Island/Surveys/H12454/Descriptive_Report/Appendices/IV%20Tides_and_Water_Levels/Request%20for%20Final%20Approved%20Water%20Levels/H12454_Tides_Request.miffile:///K:/Projects/2012_Projects/OPR-P133-RA-12,%20Chirikof%20Island/Surveys/H12454/Descriptive_Report/Appendices/IV%20Tides_and_Water_Levels/Request%20for%20Final%20Approved%20Water%20Levels/H12454_Tides_Request.pdffile:///K:/Projects/2012_Projects/OPR-P133-RA-12,%20Chirikof%20Island/Surveys/H12454/Descriptive_Report/Appendices/IV%20Tides_and_Water_Levels/Request%20for%20Final%20Approved%20Water%20Levels/H12454_Tides_Request.zipfile:///K:/Projects/2012_Projects/OPR-P133-RA-12,%20Chirikof%20Island/Surveys/H12454/Descriptive_Report/Appendices/IV%20Tides_and_Water_Levels/Final%20Approved%20Water%20Levels/Final%20Tide%20Note%20for%20OPR-P133-RA-2012,%20Registry%20No%20H12454.pdffile:///K:/Projects/2012_Projects/OPR-P133-RA-12,%20Chirikof%20Island/Surveys/H12454/Descriptive_Report/Appendices/IV%20Tides_and_Water_Levels/Final%20Approved%20Water%20Levels/H12454_TideNote.pdffile:///K:/Projects/2012_Projects/OPR-P133-RA-12,%20Chirikof%20Island/Surveys/H12454/Descriptive_Report/Appendices/III%20Progress_Sketch-Survey_Outline/Survey%20Outline%20for%20sheet%20H12454.pdffile:///K:/Projects/2012_Projects/OPR-P133-RA-12,%20Chirikof%20Island/Surveys/H12454/Descriptive_Report/Appendices/V%20%20Supplemental_Correspondence/EM710_SV_Error_in_CARIS.pdffile:///K:/Projects/2012_Projects/OPR-P133-RA-12,%20Chirikof%20Island/Surveys/H12454/Descriptive_Report/Appendices/V%20%20Supplemental_Correspondence/TrueHeave_Error_in_CARIS.pdffile:///H:/OPR-P133-RA-12_Chirikof/H12454/Acquisition_Logs/H12454_2801_Acquisition_Log.xlsmfile:///H:/OPR-P133-RA-12_Chirikof/H12454/Acquisition_Logs/H12454_2802_Acquisition_Log.xlsmfile:///H:/OPR-P133-RA-12_Chirikof/H12454/Acquisition_Logs/H12454_2803_Acquisition_Log.xlsmfile:///H:/OPR-P133-RA-12_Chirikof/H12454/Acquisition_Logs/H12454_2804_Acquisition_Log.xlsmfile:///H:/OPR-P133-RA-12_Chirikof/H12454/Acquisition_Logs/H12454_S221_Acquisition_Log.xlsmfile:///I:/SVP/H12454/2801(RA-4)/H12454_2801.svpfile:///I:/SVP/H12454/2802(RA-5)/H12454_2802.svpfile:///I:/SVP/H12454/2803(RA-3)/2012_2803_Concat.svpfile:///I:/SVP/H12454/2804(RA-6)/H12454_2804.svpfile:///I:/SVP/H12454/S221/H12454_S221.svpfile:///K:/Projects/2012_Projects/OPR-P133-RA-12,%20Chirikof%20Island/Project%20Instructions/Final_OPR-P133-RA-12_Chirikof_Island_and_Vicinity_AK_Instructions.pdffile:///K:/Projects/2012_Projects/OPR-P133-RA-12,%20Chirikof%20Island/Project%20Instructions/Final_OPR-P133-RA-12_Chirikof_Island_and_Vicinity_AK_Instructions.xmlfile:///K:/Projects/2012_Projects/OPR-P133-RA-12,%20Chirikof%20Island/Project%20Instructions/Project%20Layout_April_27_2012.pngfile:///K:/Projects/2012_Projects/OPR-P133-RA-12,%20Chirikof%20Island/Surveys/H12454/Descriptive_Report/Separates/IV.%20Crossline%20Comparisons/H12454_Crossline_Comparison.jpg