Plattform Platform	Reise-Nr. Cruise-No.	Zeitraum Period	Projekt Project	Arbeitsgebiet Working area
Solea	816	16.01.2023 - 27.01.2023	CONMAR	North Sea

Fahrtleiter Chief Scientist	Institut Institute	Auslaufhafen Port of departure	Einlaufhafen Port of return	Stationskarte Station map	Schiffsroute Trackchart
Scharsack Jorn	Institut fur Fischereiokologie der VTIG Hamburg	Cuxhaven	Cuxhaven

Ziel der Reise / Objectives of Cruise:

The cruise was performed to investigate if fish in the North Sea along the North-Western German coast are affected by munition compounds (MC) leaking from marine dumped munitions. During the cruise beam trawls were used in proximity to munition dumping sites and at control sites distant from munition dump sites, to collect flat fish for sampling. Main target species was the bottom dwelling flat fish, common dab (Limanda limanda), since they live relatively stationary. The operation of the beam trawl for flat fish in the target areas was generally successful. We started with short (5min) trawls which were extended up to 15 min trawling, depending on the amount of dab collected with the trawls. Trawls were repeated until 30 live dab were available for sampling from each sampling site. Even though sampling was not possible at all days of the cruise, due to bad weather conditions and technical problems of the ship, all planned sites were sampled. Inspection of the dab for fish diseases on board, did not reveal obvious differences between munition dumpsites and control sites. Samples of body fluids and tissues of the processed dab were stored at -20?C and are awaiting lab analysis for potential residuals of MC. Despite some delays of the sampling during the cruise due to bad weather conditions (2days) and technical problems of the ship (1day) most of the desired sampling sites could be sampled and sufficient (30 per site) dab were collected. The cooperation between the ship crew and the scientific staff was excellent throughout the cruise.

Messungen / Measurements