Preparation for entering port and harbour

  1. Prepare passage plan of that area.
  2. Communicate with port authorities for local informations.
  3. Synchronise all the clocks.
  4. check the steering gear system when coming from long passage it should be done 2 hours before.
  5. If entering at day time keep all the appropriate flags positioned.
  6. If entering at night time check for all appropriate navigational light.
  7. Keep pilot ladder ready.
  8. Keep lifebuoy with attached rope.
  9. Pilot embarking or disembarking arrangement made.
  10. check communication to forward and after station and also to steering gear compartment.
  11. Check electric power supply of windlass.
  12. Keep pilot card ready it should be presented to the pilot as soon as he enters the wheel room of the ship.
  13. cargo loading and unloading plan should ready.
  14. Check both anchor and associated gears.
  15. Check mooring line and windlass.
  16. Check all thruster is in good order.
  17. Check echo sounder for working and proper standby.

Method of obtaining a table of deviations

Division is angle contained between north-south line of ships magnetic compass and Earth’s magnetic pole.

Compass deviation is caused by magnetism in ship structure.

  • We know that Earth’s magnetic effect is least at the equator and increases as we proceed towards the pole so ideally ship should be at the equator.
  • Ship is then steered to every 10° interval starting from 000° to 360°
  • Corresponding magnetic course was noted for that every 10° interval.
  • We get variation from chart of that place in which we are sailing
  • DAVIATION calculated from it is tabulated . This is how we used to obtain daviation table.