SOLAS REGULATIONS FOR STEERING GEAR – MARINE ENGINEERING

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 STEERING GEAR REGULATION and SAFETIES

  • There must be a main and an auxiliary steering gear, each independent of other. The reason for this is that, if one fails then other can be put on work.
  • While where two identical power units are provided an auxiliary unit is not necessary.

  • The power and torque capacity must be such that the rudder can be swung from 35° on one side to 35° to the other side with the ship at maximum speed.
  • The time to swing from 35° on one side to 30° to the other side must not exceed 28 seconds.
  • Steering gear must be power operated if rudder stock diameter is greater than 120 mm. Mostly we hydraulic power for operating the rudder post.
  • power of the auxiliary steering shall be such that rudder can be swung from 15° on one side to 15° to the other at deepest draught and speed of 7 knots in 60 seconds.
  • Steering gear must be protected from shock loading, short circuit and overload and audible and visual indicators must be obtainable on bridge, engine control room and the steering gear room for motor running, alarms and trips.
  • Low level alarm must be there for hydraulic oil tank.
  • A tanker which carries oil of tonnage 10000 gross ton and more must have two self-governing steering gear systems where failure of one results in automatic changeover to the other within 45 seconds, along with alarm for indication.

STEERING GEAR SAFETIES

MOTOR SIDE:

  • Electric and mechanical stopper for rudder
  • High temperature alarm
  • Overload alarm
  • 200% insulation to motor
  • Self-starting after power failure
  • Phase failure alarm
  • One steering motor fed from emergency switch board.
HYDRAULIC SIDE:
  • Relief Valve
  • Low level and Low-low oil level alarm
  • Manual By-pass valve
  • High lube oil temperature cut out

This Post Has 2 Comments

  1. Abu bakkar siddique

    This site very helpful to be every marine engineer..

    1. devraj

      Thank You so much for your valuable feedback.

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