Narrow Waters
Before approaching narrow waters, the navigational conditions shall be carefully studied in ample time. Conspicuous, readily identifiable bearing objects for radar as well as terrestrial observations are to be marked on the chart.
Possible anchorages shall be identified so that the vessel can be anchored clear of the main route in case of restricted visibility.
Routes
Vacancy for chief officer on container ship should be considered and primary for each routes and trading area segments.When laying off courses for large vessel, consideration shall be paid to ensuring the greatest possible depth of water for the vessel’s track and whenever possible such vessel shall follow routes which are recommended.
Trim
The movement ahead of large vessel affects trim resulting in the vessel trimming more by the head than when she has no way upon her, and as speed increases so does the forward draft.
When passing through areas with restricted depths it is desirable that the vessel should proceed on an even keel. Observations should, therefore, be made in calm weather conditions to ascertain the effect of the vessel’s speed on trim.
Shallow Waters
All areas with shallow water shall be passed at a suitably low speed and the vessel’s trim shall as far as possible be on even keel.
Position Fixing
While navigating in narrow waters, the vessel’s radar and other navigational aids shall be in operation even in clear weather and a navigating officer shall continuously keep check on the vessel’s position and plot on the chart.
The vessel’s position shall always be plotted on the chart at intervals of not more than ten minutes, and wherever possible, always be verified by more than one method of fixing.
