Small overview of the waterway signs
 left side of waterway (downstream) |  right side of waterway (downstream) |  main waterway to the right (upstream to the left) |  main waterway to the left (upstream to the right) | |
 transition of the waterway from right to left |  transition of the waterway from right to left |  transition of the waterway from left to right |  transition of the waterway from left to right | |
 left bank |  left bank |  right bank |  right bank |  division of waterway |
 dangerous obstacle on the left side |  dangerous obstacle on the left side |  dangerous obstacle on the right side |  dangerous obstacle on the right side |  division of waterway |
 permission to pass through |  permission to pass through |  Passing through is prohibited, prepared for go |  decommission prohibited in the width of 40 m |  special caution required |
 No thoroughfare |  No thoroughfare |  No thoroughfare |  No thoroughfare for a longer period of time |  No thoroughfare for a longer period of time |
 restriction indicated on additional plate |  decommission prohibited |  decommission prohibited in the length of 200m |  decommission prohibited in the length of 200m |  decommission prohibited if longer than 20m |
 anchor prohibited, no anchor |  no mooring |  no turn |  clearance height is limited |  water depth is limited |
 width is limited |  waterway constriction, distance in meter, which vessels have to keep away from sign |  navigate on the right side of waterway |  navigate on the left side of waterway |  navigate on the left side of waterway |
 navigate in the right side of waterway |  cut across to waterway on the right side |  cut across to waterway on the left side |  pursue in direction of the arrow |  stop |
 stop in 2.000m |  stop for customs control |  no thoroughfare outside the area bounded by the signs |  recommended area to pass through |  Vessels which naviagte on the main route have to adjust their direction/speed so it is possible for other vessels to exit the port |
 No passing, no overtaking |  No overtaking |  No overtaking at the same time |  use radio |  use radio with indicated channel |
 No navigating in this area |  No navigating in this area within a distance to the buoy less than 25m |  Speed-limit |  Speed-limit |  Prohibited for vessels with machine drive |
 No jetski |  acoustic signal |  acoustic signal 2x |  Avoid wash and suction |  No waterskiing |
 No surfing |  Prohibited for vessels without machine drive or sail propulsion |  Prohibited for vessels with sail propulsion |  No pleasure crafts |  No launching |
 Decommission permitted |  Decommission in the area of 200m permitted |  tieing permitted |  Anchoring allowed |  maximum number of boats side by side |
 Decommission permitted in the width of 40m |  Decommission permitted in the width of this zone |  free-moving ferry |  not free-moving ferry |  not free-moving ferry in 2.000 m |
 Stop when continuous light |  continue when blinking light |  passing through in both directions permitted |  Passing through in one direction permitted (opposite direction is blocked) |  Passing through in one direction permitted (opposite direction is blocked) |
 reserved area for pushing boats (2 blue lights or cones are required) |  reserved area for pushing boats (3 blue lights or cones are required) |  it is recommended to navigate in direction of the arrow ort he blinking light |  reserved area for pushing boats (2 blue lights or cones are not required) |  reserved area for pushing boats (blue lights or cones are required) |
 reserved area for all vessels but pushing boats (blue lights or cones are not required) |  reserved area for all vessels but pushing boats (blue lights or cones are required) |  reserved area for all vessels but pushing boats (2 blue lights or cones are required) |  reserved area for all vessels but pushing boats (3 blue lights or cones are required) |  Do not entering lock in direction of arrow |
 Entering lock in direction of arrow is permitted |  reserved area for all vessels (blue lights or cones are not required) |  reserved area for all vessels (blue lights or cones are required) |  reserved area for all vessels (2 blue lights or cones are required) |  reserved area for all vessels (3 blue lights or cones are required) |
 End of restriction, prohibition or instruction |  Information via radio channel |  Dam |  recommended turning round area |  for pleasure crafts |
 Permitted for vessels with machine drive |  Permitted for small vessels with high speed |  Permitted for sailing vessels |  Jetski permitted |  waterskiing permitted |
 Surfing permitted |  Permitted for vessels without sail propulsion or own machine drive |  launching here recommended |  recommended area for loading and unloading of vehicles |  Drawing of drinking water is possible |
 Telephone station |  electrical cable crosses |
 circuit danger in northern direction |  Water without danger |  Water without danger |  circuit danger in western direction |  isolated danger spot |
 circuit danger in eastern direction |  special character |  special character |  circuit danger in southern direction |  special character |
 special character |
Source: www.chat.jachtinfo.cz