Plattform Platform	Reise-Nr. Cruise-No.	Zeitraum Period	Projekt Project	Arbeitsgebiet Working area
Solea	532	29.09.2004 - 17.10.2004		ICES-Subarea 22 (also ICES-subarea IIIc) Baltic Sea ICES-Subarea 21 ICES-Subarea 24 (part of ICES-subarea IIId) ICES-Subarea 23 (also ICES-subarea IIIb)

Fahrtleiter Chief Scientist	Institut Institute	Auslaufhafen Port of departure	Einlaufhafen Port of return	Stationskarte Station map	Schiffsroute Trackchart
Gotze E.	Institut fur Fangtechnik der BFA Hamburg	Rostock	Rostock

Ziel der Reise / Objectives of Cruise:

Objective: International acoustic survey for pelagic fish stocks in the BalticNarrative: RV "SOLEA" left the port of Rostock-Marienehe on 29th September 2004. The joint German-Danish acoustic survey covered the whole Sub-divisions 21, 22, 23 and 24. All investigations were done during night as in last years. The acoustic equipment was an echosounder EK60 with the hull mounted transducer ES38B. 51 trawl hauls were carried out to identify the target species. From each haul sub-samples were taken to determine length and weight of fish. Further samples of herring and sprat were frozen for additional investigations in the lab (i.e. sex, maturity, age). After each trawl haul the hydrographic condition was recorded by a CTD probe. The survey ended on 17th October 2004 during morning time. RV "SOLEA" entered the port of Rostock-Marienehe the same day.

Messungen / Measurements