Plattform Platform	Reise-Nr. Cruise-No.	Zeitraum Period	Projekt Project	Arbeitsgebiet Working area
Alkor	AL531	12.11.2019 - 14.11.2019		Baltic Sea

Fahrtleiter Chief Scientist	Institut Institute	Auslaufhafen Port of departure	Einlaufhafen Port of return	Stationskarte Station map	Schiffsroute Trackchart
Flogel Sascha	Helmholtz Centre for Ocean Research Kiel (GEOMAR)	Kiel	Kiel

Ziel der Reise / Objectives of Cruise:

AL531:Objectives of the cruise The expanding need for tools to investigate various parts of the world oceans such as the shelf seas and continental margins for scientific reasons is continually increasing while our ability to address questions concerning ocean change is fundamentally limited by the lack of key technologies for enabling in-situ experimentation and observation performing persistent sensor measurements in the ocean. The work carried out during this short cruise will test the capability of the innovative VIATOR robotic system incl. a new WLAN-catamaran. At the GEOMAR Helmholtz Centre for Ocean Research Kiel, the MANSIO-VIATOR (latin: harborage-traveller) system was designed. It comprises a stationary lander system and a mobile deep-sea crawler. The hangar is used for transport to the site of investigation and for recovery at the ocean surface as well as to recharge the lithium polymer accumulators on the crawler. The hangar facilitates data transfer from the lander system to the crawler and ultimately to the sea surface by acoustic modem. Within the ARCHES project (Autonomous Robotic Networks to Help Modern Societies) a new WLAN buoy incl. a fiber optic cable to facilitate online access to the crawler system was developed. The new system allows operation up to 300 m water depth. The system consists of a newly designed frame with two hulls (PE). The catamaran carries a turnable steel drum that contains 430 m of the fiber optic cable and the WLAN antenna. During this short cruise the system was thoroughly tested under offshore conditions. Furthermore, we were testing project relevant USBL-components to facilitate an improved under water communication between the research vessel and the crawler system. This cruise was used to test Kraken's new SeaVision underwater laser scanner. The Kraken SeaVision system is a new take on subsea 3D laser imaging. Designed to operate in a twin scanning configuration, with adjustable baseline, SeaVision can generate very high resolution 3D scans.

Messungen / Measurements