FK190726 Dive Information
Watling, Les
Investigator
UHM
Platform
SuBastian
ROV
Details
Deep Coral Diversity at Emperor Seamount Chain 2019. **NOTE** ROV positioning data from cruise FK190726 is erroneous. The USBL head was damaged, and a second USBL head was deployed over the side from a crane. The motion data that would normally be used in positioning beacons was not appropriate - as the ship rolled the suspended head would simply move up and down in the water yet the system was assuming that it was angling with the ship. This meant that the true position of the vehicle was never accurate for horizontal/vertical positioning. This includes the Pilot's Choice positioning from GreenSea, as it gets data from the USBL system. The rough position, ie Western slope of a particular seamount, is fine but offsets of up to 500m were observed.
Dive Information
Devices
Related Data Sets
Dive Information
Total Dive Count: 11
Details
Deep Coral Diversity at Emperor Seamount Chain 2019. **NOTE** ROV positioning data from cruise FK190726 is erroneous. The USBL head was damaged, and a second USBL head was deployed over the side from a crane. The motion data that would normally be used in positioning beacons was not appropriate - as the ship rolled the suspended head would simply move up and down in the water yet the system was assuming that it was angling with the ship. This meant that the true position of the vehicle was never accurate for horizontal/vertical positioning. This includes the Pilot's Choice positioning from GreenSea, as it gets data from the USBL system. The rough position, ie Western slope of a particular seamount, is fine but offsets of up to 500m were observed.Events
S0280
Start
2019-08-01T07:00:00
Locale
NotProvided
NotApplicable
Stop
2019-08-03T18:00:16
Nav Type
DVL/USBL/INS
S0281
Start
2019-08-05T20:00:00
Locale
NotProvided
NotApplicable
Stop
2019-08-06T08:05:51
Nav Type
DVL/USBL/INS
Details
End time was not in config.json and may not be accurate.
S0282
Start
2019-08-08T18:00:00
Locale
NotProvided
NotApplicable
Stop
2019-08-09T07:20:27
Nav Type
DVL/USBL/INS
S0283
Start
2019-08-09T19:00:00
Locale
NotProvided
NotApplicable
Stop
2019-08-10T07:15:25
Nav Type
DVL/USBL/INS
S0284
Start
2019-08-10T18:00:00
Locale
NotProvided
NotApplicable
Stop
2019-08-11T18:53:38
Nav Type
DVL/USBL/INS
S0285
Start
2019-08-11T18:00:00
Locale
NotProvided
NotApplicable
Stop
2019-08-12T08:11:52
Nav Type
DVL/USBL/INS
S0286
Start
2019-08-12T19:00:00
Locale
NotProvided
NotApplicable
Stop
2019-08-13T07:00:39
Nav Type
DVL/USBL/INS
S0287
Start
2019-08-13T19:00:00
Locale
NotProvided
NotApplicable
Stop
2019-08-14T07:27:22
Nav Type
DVL/USBL/INS
S0288
Start
2019-08-15T19:00:00
Locale
NotProvided
NotApplicable
Stop
2019-08-16T08:01:30
Nav Type
DVL/USBL/INS
S0289
Start
2019-08-16T18:00:00
Locale
NotProvided
NotApplicable
Stop
2019-08-17T08:34:59
Nav Type
DVL/USBL/INS
S0290
Start
2019-08-17T18:45:00
Locale
NotProvided
NotApplicable
Stop
2019-08-18T07:27:46
Nav Type
DVL/USBL/INS
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