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Ship-Avoiding acttion in TRS

 

Ship entered in TRS-Avoiding Action

 

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Inform C/O, order him to secure deck.
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Inform C/E, order him to secure E/R.
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Plot storm’s position and observe its movement.

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From weather report
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Buys Ballots law:
Pressure below mean Wind force (Beaufort scale) Bearing of center from wind direction Approximate distance
5mb > 6 12 Points Within 200nm
10mb > 8 10 Points Within 125nm
20mb About 12 8 Points Within 75nm

 

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Determine sector in which the ship is in.

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From the weather report
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From the observed storm position and movement.
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Heave to for a few hours and observe the change of wind direction.

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In dangerous semicircle in northern hemisphere, the wind will veer, barometer will fall. Barometer will rise after passing the trough line.
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In navigable semicircle in northern hemisphere, wind will back, barometer will fall. Barometer will rise after passing the trough line.
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Wind direction will remain steady if the vessel is in the path of storm.
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Use appropriate bad weather maneuver as per the ship's position relative to storm.
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In dangerous semicircle, keep the wind on starboard bow, about four points. Keep on altering to starboard as the wind veers.
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In navigable semicircle or in the path, keep the wind on starboard quarter, keep on altering as the wind backs.

 
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Order OOW to

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Update and monitor weather information and reports.
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Record hourly in log book:
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Wind direction and force.
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Wind shift.
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Barometric pressure.
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Swell direction and height.
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Arrange a FSA for storm.
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Strengthen the bridge watch and ensure proper look out.
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Change over to manual steering if auto pilot cannot cope up with weather condition.
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Continuous watch as visibility can be reduced.
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Instruct C/O to:

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Check ship’s stability, draft, trim.
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Press up tanks to reduce FSE and windage area
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Propeller and rudder sufficiently immersed to prevent

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Loses of their efficiency
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Racing of engines
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Excessive vibration
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I will remain outside of a radius of 200nm from storm center. If necessary:
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Ensure vessel does not roll or pitch heavily, as it may cause

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May be damage to cargo
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Shifting of cargo
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Damage to ship’s structure
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Damage to deck equipments, cranes, derricks etc.
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All preparations for heavy weather to be entered in official log book in details and deck log book.
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I will keep in mind:

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Storm can be erratic and different from weather forecast.
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Engine and any navigational/ communication equipment may fail any time.
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Ensure personnel get enough rest, considering fatigue due to storm.
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No body to go on deck without C/O’s permission.
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Instruct C/E to check steering gear and M/E performance regularly.
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Inform following parties about storm and amended ETA:

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Owner.
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Charterer
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Agent of next port.

 

 

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