well, if you leave Hamburg or Le Havre or other ports on a nice and sunny afternoon in Summer, especially on Saturday or Sunday , no wind, it's always a lot of entertainment with port and starboard rudder manoeuvres and horn-blowing to warn drunken....sailors and shipspotters aiming for most spectacular pictures... 8-) . The problem is that, even if they drift around somewhere close to the fairway, you cannot ignore them or sink a family just by your vsl swell.