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How is cushioning done in steering gear during rough weather ?

Ship moving through bad weather, the rudder is subjected to additional shock loading from waves, etc. The cushioning arrangement is provided by shock relief valve. In bad weather, the shock loading on the rudder is
transmitted to the ram through the rudder stock and tiller. The sudden increase of pressure of oil in one cylinder is relieved through the shock relief valve to the other cylinder. Therefore, allowing the rudder to yield without causing any damage to the steering gear.
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