Steering gear regulations

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• 28/01/2020 at 15:47 #327
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  Keymaster

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  • 1. Main steering and rudder stock of adequate strength and capable to steer the ship at max speed 
    2. Capable to turn rudder from 35 to 35 either side, from 35 to 30 in not more than 28 sec at deepest draught at max speed
    3. Aux steering able to put from 15 to 15 on either side not more than 60 sec at deepest draught and at ½ speed
    4. Failure of 1 will not cause the other 
    5. All components to be of reliable construction
    6. Design piping and construction at least 1.25x max working pressure
    7. Setting of relief valve not more than design pressure 
    8. Main and aux arrange to restart automatically after power failure 
    9. Aux steering need not be fix if main consist of 2 or more identical power unit
    10. Single failure in piping or 1 of power unit, defect can be isolated, and steering capability maintained
    11. Steering gear control provided on both bridge and steering compartment
    12. Steering gear operated on bridge ( if electrive own electrical circuit ) 
        1. • • Have means provided in steering gear compartment to disconnect control system from bridge
             • System can operate from bridge 
    13. Short circuit protection for steering gear control supply circuit
    14. Electrical circuit and control system are separated as far from cables and pipes
    15. Means of communication provided between bridge and steering gear compartment
    16. Rudder angle indication independent of control system, indicated on bridge and steering gear
    17. Hydraulic powered steering gear provided arrangement to maintain cleaniness of hydraulic fluid
    18. Low level alarm at each fluid reservoir to ECR, bridge
    19. Fix storage tank with gauge, have sufficient capacity for 1 full charge
    20. Steering gear compartment shall be readily accessible, separate from machinery space, provided with rails and non-slip surface in case of leakage
    21. Rudder stock 0.23m diameter, alternate power supply provided in 45sec, supply at least of 30 minute continuous for 10k GT, else 10 minute below 10k Gt
    22. Every tanker, 10kGT above, main steering got 2 identical unit, single failure, steering regained in 45sec.
    23. Interconnection of hydraulic power system, loss of hydraulic fluid capable of detection and defective system isolated
    24. Means of indicating power unit if running are installed at ER and bridge
    25. Power unit have connection to emergency
    26. Within 12 of departure, checking of steering gear system, and communication 
    27. Emergency steering at least 1 in 3 months
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