Okeanos Explorer

2018 Okeanos Explorer EM302 SAT

Multibeam System: 
EM302
CruiseID: 
EX1810

The primary RX array SAT activities included:

  • 2018-10-02: depart Quonset, RI
  • EM302 TX and RX array survey review
  • EM302 and POS MV geometry / config. review
  • EM302 start-up (by Kongsberg) and BISTs
  • Geometric calibration and verification (‘patch test’)
  • Deep roll verification
  • Deep accuracy testing
  • Swath extinction data collection during transits (including after SAT portion of EX1810)
  • EM302 RX noise vs. speed testing (2018-10-24)
  • 2018-10-05: return Pt. Judith, RI for personnel transfer

2020 Okeanos Explorer EM304 SAT

CruiseID: 
EX2000

Summary

  1. The Okeanos Explorer received a Kongsberg EM304 multibeam echosounder topside upgrade over the 2019-20 winter maintenance period. No changes were made to the TX or RX arrays (installed in 2007 and 2018, respectively) or the Applanix POS MV positioning and attitude system.
  2. Sea acceptance testing (SAT) was conducted during EX2000 (March 3-8, 2020) with Kongsberg, NOAA, and OMAO personnel on board to complete the following procedures:
    • Review EM304 and POS MV system geometry

2019 Okeanos Explorer EM302 Shakedown

Multibeam System: 
EM302
CruiseID: 
EX1902

Summary
The primary shakedown activities included:

  • 2019-05-12: depart Pascagoula, MS
  • EM302 and POS MV geometry / config. review
  • EM302 dockside BISTs (incl. TX channels)
  • Geometric calibration (‘patch test’)
  • Backscatter calibration (for Kongsberg processing)
  • Roll verification
  • Swath extinction data collection during transits
  • EM302 RX noise vs. speed testing
  • Acoustic interference testing across all systems
  • K-Sync SAT and testing with Kongsberg support
Syndicate content