%0 conference lecture (invited) %@ %A Colijn, F., Petersen, W., Schroeder, F., Kaitala, S., Soerensen, K., Hydes, D. %D 2007 %J Fourth Session of the Ship Observations Team (SOT-IV) at WMO Headquarters %T FerryBox and Automated Ships of Opportunity as Operational Tools for Ocean Observing Tasks %U %X