Ceobas.no Continuous Exchange Of Ballast At Sea, is the only reliable rinsing method that once and forever stop the spread of microorganism and microplastic from ships. All other rinsing methods in use today, pollute the air more than it rinses the ballast water. A Ceobas constructed ship, is always using local ballast if needed. Ceobas construction increases the ships speed (same consumption) and absolutely no spread of microorganism and microplastic and other pollution. Ceobas constructed ships allow more cargo on the same DW.