Plattform Platform	Reise-Nr. Cruise-No.	Zeitraum Period	Projekt Project	Arbeitsgebiet Working area
Walther Herwig III	WH374	14.05.2014 - 04.06.2014	BASS	Baltic Sea

Fahrtleiter Chief Scientist	Institut Institute	Auslaufhafen Port of departure	Einlaufhafen Port of return	Stationskarte Station map	Schiffsroute Trackchart
Bottcher Uwe	Thunen-Institut fur Ostseefischerei	Bremerhaven	Warnemunde	Karte Map

Ziel der Reise / Objectives of Cruise:

The cruise was part of the Baltic International Spring Survey (BASS). The main pelagic species of interest was sprat. The cruise is part of the Baltic International Acoustic Spring Survey (BASS), which is coordinated within ICES. The main objective was to assess the sprat stock in the Baltic proper. Germany covered the ICES Subdivisions 24, 25 and the western parts of Subdivisions 26 and 28, 29. The acoustic equipment was an echosounder EK60with a used frequency of 38 kHz. The hydroacoustic measurements were conducted on parallel transects with a distance of 15 - 18 nautical miles. The survey speed was 10 knots. To identify the fish targets, trawls hauls were conducted with the pelagic gear 'PSN 205'. The acoustic investigations and the fishing hauls were carried out in the time from 4:00 to 18:00 UTC. CTD-profiles were taken after each trawl station or at least after every 15 miles surveyed distance.

Messungen / Measurements