Rudder 
To dream of a rudder suggests that you will travel abroad and meet new friends.
A broken rudder bodes sickness and disappointment.
Helm
To dream of being at the helm of a ship symbolizes a feeling of power and control over the direction your life is taking.
Dreaming of a friend or family member at the helm of your ship means that person has a strong influence over your life.
To dream that you have taken the helm of someone else's ship indicates that you see they have a need for guidance and advice.
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