Téthys II

	Téthys II, photo by Dugornay Olivier (2021)
History
France
Name	Téthys II
Owner	Ifremer
Operator	Genavir
Port of registry	France
Builder	Piriou, Concarneau, France
Completed	1993
Identification	IMO number: 9066007; MMSI number: 212 000 227 212 000; Callsign: FGTO;
Status	Active as of 2025
General characteristics
Class & type	research vessel
Type	Fishing vessel specialized in coastal oceanographic research
Displacement	224 tonnes
Length	24.90 m
Beam	7.50 m
Draught	3.20 m
Propulsion	conventional diesel electric, POYAUD UD 25V12 478 kW at 1300 rpm
Speed	11 knots
Endurance	10 days at 11 knots
Capacity	As a category 2 vessel (up to 200 nautical miles from a safe haven): 8 scientists, technicians, and hydrographers; For trips at sea lasting up to 24 h and in accordance with category 3 rules (up to 20 nautical miles from a safe haven): 12 scientists, technicians, and hydrographers; Two scientific laboratories: total surface area 14 m2; Scientific office space on the bridge: 3 m2; Afterdeck surface area: 22 m2; Space for one 10 ft container on the afterdeck;
Crew	7
Sensors &; processing systems	Echo sounder, Simrad EA600, dual frequency 12 kHz & 200 kHz; Echo sounder, JMC F-3000, dual frequency 50 kHz & 200 kHz; GPS, 2 antennas, HEMISPHERE VS330 (position, heading and attitude; screens available on DB9 sockets on the bridge, in the wet lab and in the dry lab); ADCP, hull fitted, RDI 75 kHz (acquisition of current data); Weather station Batos Météo France ; Fluorometer, 10-AU-005-CE, Turner Designs; Thermosalinometer, SBE 21; Boom for acoustic equipment;

Téthys II is a French oceanographic research vessel owned by Ifremer. It is used for scientific research mainly in the Mediterranean Sea, with missions lasting around ten days and up to 200 miles from the port. Téthys II is equipped with instruments for marine geosciences, physical oceanography, biological oceanography, biogeochemistry, and marine chemistry.^[1]^[2]^[3]^[4] Its twin vessel is the Côtes de la Manche.^[5]

NameTéthys II

OwnerIfremer

OperatorGenavir

Port of registryFrance

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Téthys II

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History

Téthys II, photo by Dugornay Olivier (2021)




France
Name	Téthys II
Owner	Ifremer
Operator	Genavir
Port of registry	France
Builder	Piriou, Concarneau, France
Completed	1993
Identification	IMO number: 9066007 MMSI number: 212 000 227 212 000 Callsign: FGTO
Status	Active as of 2025


General characteristics
Class & type	research vessel
Type	Fishing vessel specialized in coastal oceanographic research
Displacement	224 tonnes
Length	24.90 m
Beam	7.50 m
Draught	3.20 m
Propulsion	conventional diesel electric, POYAUD UD 25V12 478 kW at 1300 rpm
Speed	11 knots
Endurance	10 days at 11 knots
Capacity	As a category 2 vessel (up to 200 nautical miles from a safe haven): 8 scientists, technicians, and hydrographers For trips at sea lasting up to 24 h and in accordance with category 3 rules (up to 20 nautical miles from a safe haven): 12 scientists, technicians, and hydrographers Two scientific laboratories: total surface area 14 m² Scientific office space on the bridge: 3 m² Afterdeck surface area: 22 m² Space for one 10 ft container on the afterdeck
Crew	7
Sensors & processing systems	Echo sounder, Simrad EA600, dual frequency 12 kHz & 200 kHz Echo sounder, JMC F-3000, dual frequency 50 kHz & 200 kHz GPS, 2 antennas, HEMISPHERE VS330 (position, heading and attitude; screens available on DB9 sockets on the bridge, in the wet lab and in the dry lab) ADCP, hull fitted, RDI 75 kHz (acquisition of current data) Weather station Batos Météo France Fluorometer, 10-AU-005-CE, Turner Designs Thermosalinometer, SBE 21 Boom for acoustic equipment