Electro-Hydraulic Steering Gear - Lloyds Steels Industries Ltd

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The Electro-Hydraulic Steering Gear on Marine Ships are used to facilitate turning of Ships as desired by Operator (Helmsman)/ pilot of the Ship. This is done by turning the Rudders of the Ship through Hydraulic Cylinders actuated via hydraulic system controlled by Electronic Controls remotely from Steering posts viz. Bridge, Wheel-House, Emergency Steering Post, Aft. Steering Post as per operator’s requirement.

The Electronic consoles are provided to facilitate Steering of Ship in Follow-Up (FU) Mode & Non-Follow Up (NFU) Mode. An Auto-pilot is provided on Client’s request for Course keeping of the Ships on a preset course automatically. Two Modes namely Auto Course Mode and Auto Track Mode are provided for Auto-pilot. 

The System is provided with redundancy thus optimum reliability of the functioning. 

The System functionality is available as under 

  • Follow Up Mode : System is operated normally on FU Mode i.e. Rudder will follow the Operator’s demanded rudder angle via Follow-Up Wheel having a graduated degree scale. 
  • Non-Follow Up Mode : In this Mode, Rudder is turned Port or Stbd via Push Button. This Mode is used in case FU Mode is not working.
  • Emergency Mode : In the event of total loss of electrical power to Steering Gear, Rudder can still be turned Port or Stbd with reduced efficiency with the help of Emergency Hand Wheel rotary pump.  

The various Alarm Indications, Interlock are provided for safety and avoid damage of the system. The Rudder Angle Indicators (RAI) are provided on various locations as per Client’s request to see actual Rudder position.

Lloyds Steels Industries Limited, Mumbai has manufactured, supplied and commissioned Steering Gear System for Indian Naval Warships of Corvette Class (Project 25 & Project 25 Alpha), Frigate Class (Project 16 Alpha) and Anti-Submarine Warfare Corvettes (ASWC-Project 28). These equipment has made under stringent Naval quality standard and complying to Naval Shock Standard, type tests, Shock & Vibration requirements.