CATSIW


  1. danger: a signal or message warning of the presence of a danger to navigation.
  2. maritime obstruction: a signal or message warning of the presence of a maritime obstruction.
  3. cable: a signal or message warning of the presence of a cable.
  4. military practice: a signal or message warning of activity in a military practice area.
  5. distress: a station that may receive or transmit distress signals.
  6. weather: a visual signal displayed to indicate a weather forecast. (IHO Dictionary, S-32, 5th Edition, 4740)
  7. storm: a signal or message conveying information about storm conditions.
  8. ice: a signal or message conveying information about ice conditions.
  9. time: an accurate signal marking a specified time or time interval. It is used primarily for determining errors of timepieces. Such signals are usually sent from an observatory by radio or telegraph, but visual signals are used at some ports. (IHO Dictionary, S-32, 5th Edition, 4735)
  10. tide: a signal or message conveying information on tidal conditions in the area in question. (IHO Dictionary, S-32, 5th Edition, 4734)
  11. tidal stream: a signal or message conveying information on condition of tidal currents in the area in question. (IHO Dictionary, S-32, 5th Edition, 4733)
  12. tide gauge: a device for measuring the height of tide. A graduated staff in a sheltered area where visual observations can be made; or it may consist of an elaborate recording instrument making a continuous graphic record of tide height against time. Such an instrument is usually actuated by a float in a pipe communicating with the sea through a small hole which filters out shorter waves. (IHO Dictionary, S-32, 5th Edition, 1984)
  13. tide scale: a visual scale which directly shows the height of the water above chart datum or a local datum. (IHO Chart Specifications, M-4, 496)
  14. diving: a signal or message warning of diving activity
  15. water level gauge: a device for measuring and conveying information about the water level (non-tidal) in the area in question.