2017-10-25Pacific Hydrographic BranchJames KirkpatrickActing Team LeadThe purpose of this survey is to respond to requests for hydrographic surveys to reopen the channels in Tampa Bay due to the effects of Hurricane Irma. The survey limits and methods (i.e., sensors used) will be determined by the Team Lead in consult with the NRB Chief and NOAA Navigation Manager. Data will be collected in the most efficient manner to provide USACOE and USCG information that is critical to make real-time decisions on channel and/or port closures and openings. The data from this survey are not intended to meet NOAA charting specifications, and are not intended to be applied to the nautical chart with the exception of hazards to navigation (i.e., DToNs), subject to branch review.Preliminary products were provided directly to the navigation manager and USACOE representative. All survey systems and methods utilized during this survey were as described in S-G918-NRT2-17_DAPR.xml. Exception - Due to inferior data quality from Hypack Side Scan NRT2 made a decision to log the SSS straight to .jsf using Edgetech Discover2. We knew that the navigation was not set up to write into the .jsf file and thought that there would be a simple way to post apply the nav data into the .jsf. This turned out to not be the case as Caris could not convert the data without navigation. After several attempts with Caris to correct the problem we were not able to make the fix work. The side scan data was observed in real time at all times and no significant contacts were found. The raw SSS data is submitted with the project.Soundings were reduced to Mean Lower Low Water (MLLW) using observed tides from 8773037, 8773259, 8773701, 8774230, 8775237, 8775296, 8775792, 8776604, 8777812, 8779748, 8779749 and 8779770 and TCARI provided by CO-OPS from a 2017 survey of this area G916NRBTJFH2017_TampaBay .tc.There were no DTONs created for this survey.NRT2 was tasked with surveying several portions of the Tampa Bay shipping channel to verify that no shoaling nor obstructions had encroached into the channel during the passing of Hurricane Irma. No obstructions or shoaling were found in the surveyed areas.This survey does not meet charting specifications and is not adequate to supersede prior data.Survey was not intended to supersede prior data with the exception of dangers to navigation, per project instructions.S-J918-NRT2-17D00239FloridaTampa BayTampa Bay10000Edgetech4125Side Scan SonarKongsbergEM2040CMultibeam EchosounderNorth American Datum of 1983 (NAD83)Mean Lower Low WaterTCARIUTM Zone 17NNRT22017-09-142017-09-15James Kirkpatrick2017-10-25