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Procedure for ships navigation in confined waters, related check item

Ships navigation in confined water involve many complexities and careful consideration will need to be made for safe passage through an area of confined water
Ship master should also bear in mind the procedures explained here are only indicative, not exhaustive in nature and one must always be guided by practices of good seamanship. Also specific ship will have her own characteristics .

Confined water check item

1. Are large scale chart in use for such area?

2. Have charts and nautical publications been corrected upto date including T & P notices?

3. Has information on local navigational warnings and notices been checked?

4. Has the vessels draft been calculated exactly?

5. Have the tides and tidal current been calculated properly and confirmed?

6. Is the under keel clearance being maintained considering the following factors?

7. Effect of tides

8. Effect of squat and a change of trim in shallow waters

9. Effect of swell and where applicable sandwaves

10. Changes of draft and trim due to the specific gravity of sea water

11. List of the vessel caused by steering

12. Is the engine ready for operation anytime?

13. Has the auxiliary generator been started?

14. Have helmsman been put in position for manual steering to be ready anytime?

15. Are additional power units for the steering gear running?

16. Have operation of compasses and other navigational instruments been confirmed?



17. Are the radar and ARPA operating normally?

18. Is VHF listening watch maintained on Ch16 and a proper channel stipulated by local rules?

19. Has the method of notice to VTS designated by regulations been confirmed?

20. Has maneuvering ability of own vessel including turning radius been grasped?

21. Is the ship's position fixing method & frequency established?



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