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Turning circle advices

Ships manoeuvering - Turning circle diameter : Advice for Helmsman and Officer of the Watch

1. A deeply laden vessel will experience little effect from wind or sea when turning, but a vessel in a light or ballasted condition will make considerable leeway, especially with strong winds.

2. When turning, the pivot point of the vessel is often situated well forward of the bridge and may produce the effect of the vessel turning at a faster rate than she actually is.

3. A vessel trimmed by the stern will steer more easily but the tactical diameter of the turn is increased.

4. A vessel trimmed by the head will decrease the diameter of the turning circle but will become difficult to steer.

5. If a vessel is carrying a list, the time taken to complete the turn will be subject to delay. A larger turn will be experienced when turning into the list.

Related Topics

Ship manoeuvering-turning circle advices
A deeply laden vessel will experience little effect from wind or sea when turning, but a vessel in a light or ballasted condition will make considerable leeway, especially with strong winds. ....

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When a vessel fitted with a right-hand fixed propeller, she would benefit from the transverse thrust effect, and her turning circle, in general, will be quicker and tighter when turning to port than to starboard. ....

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The deeper a vessel lies in the water, the more sluggish will be her response to the helm. On the other hand, the superstructure of a vessel in a light condition and shallow in draught is considerably influenced by the wind. ....

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Merchant ships usually turn in a circle having a diameter of about 3–4 times the length between perpendiculars (LBP). The larger the rudder, the smaller will be the Turning circle diameter(TCD). During the TCD manoeuvre, the ship will experience transfer, advance, drift angles and angle of heel (see Figure )....




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