Page 38: of Marine Technology Magazine (January 2021)

RESEARCH SHIPS RV Roger Revelle

The Gondola for the science transducers

Glosten he original multibeam and other acoustic

Instrument Manufacturer Model Details New or Moved sensors was a ? ush installation to mini-

Multibeam Kongsberg EM124 Tx - 1 deg New

Tmize draft. Flush installations are more

Multibeam Kongsberg EM124 Rx - 2 deg New prone to bubbles sweeping down and over the

Multibeam Kongsberg EM712 Tx - 0.5 deg New

Multibeam Kongsberg EM712 Rx - 1 deg New transducers, reducing the effectiveness of the in-

Depth sounder Massa TR-1073A 12 kHz Moved struments. Various options were evaluated with Massa TR-1073A 12 kHz Moved

Scienti? c wide band echo sounder SIMRAD EK80 18 kHz New

CFD to help improve performance, with the se-

Scienti? c wide band echo sounder SIMRAD EK80 38 kHz New lection to develop a gondola to move the trans-

Scienti? c wide band echo sounder SIMRAD EK80 70 kHz New

Scienti? c wide band echo sounder SIMRAD EK80 120 kHz New ducers below the baseline and allow bubbles to

Scienti? c wide band echo sounder SIMRAD EK80 200kHz New pass between the hull and the gondola and not

ADCP RDInstruments 75 kHz Moved

ADCP RDInstruments 150 kHz Moved over the face of the transducers. The gondola is

Sub-Bottom Massa 16 x TR-1075A 4 kHz Moved 38 ft. long, 16 ft. wide at the widest. Glosten de-

Ref Hydrophone Moved

Ref Hydrophone Moved veloped a detailed structural design and nested

HDSS 50 kHz Moved plates for the construction of the gondola. It also

HDSS 140 kHz Moved developed the installation of the internal trans-

The HDSS is a system developed at Scripps – Hydrographic Doppler Sonar System. This had been located ceivers and conduit routing from the gondola to in wells aft of the transducers array, and was re-con? gured to ? t in the gondola and the wells covered over. the transceivers. 38 January/February 2021

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