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3.  Estimation of future environment conditions.  Additional information.  Consultants.  Hind casting.  Observation methods are not standard.

4. NAVIGATION AND SURVEY SYSTEM

5.  Require maps and Charts.  Instrument used.  EPS  GPS  Traditional instruments.  Positioning transponders.

6. POSITIONING AND CONTROL

7.  Requirements.  Sea state.  Sea-floor properties  Weather  Anchor  Mooring lines.

8.  Vessel propulsion system.  Vessel characteristics.  Tensions in mooring lines.  Currents.  Electronic equipment .

9. COMMUNICATION AND DATA PROCESSING.  Satellite.  Fibre optics.

Environmental forecasting