Steering

• Recognized Leader in the design and manufacture of marine steering systems for OSVs, PSVs, Tugs, Towboats, Yachts, Ferries, USCG, Navy & Army vessels, etc.
• Over 200 systems manufactured and delivered in the past 25 years
• Traditional, proportional and dual flow systems available:  off-the-shelf or custom designed
• Horsepower Limiting designs can reduce power requirements of large systems by up to 50%
• Extremely precise and responsive rudder movement through electro-hydraulic design
• Patented Follow-up Steering Failure Alarm alerts operator to a steering malfunction, providing the ability to switch to another steering mode or system without loss of control
• Emergency Steering Mode – a manual backup if all else should fail
  

All components except cylinders are designed and manufactured at our New Orleans facility

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Types of Steering

Traditional
Also known as “bang-bang” steering, the fluid is released rapidly when the rudder command signal is initiated thereby resulting in a “hammering” action.

• EMI has delivered over 150 of these types of systems generally installed on workboats, towboats, tugs and military patrol boats.
  
  

Dual Flow
In this type of system, only about half of the fluid is released immediately on rudder command and the second half follows moments later.

This method significantly reduces the “hammering shock” to the system upon solenoid closure.

• Over 50 of these type have been installed by EMI on larger supply boats and tugs. One of the larger systems was installed on the Corps of Engineers M/V Mississippi.

Proportional
This design virtually eliminates the “shock” by sending a ramped flow to the cylinders, thereby greatly increasing the life expectancy of the hoses, cylinders and jockey bar
connection pins.

• While more expensive than the alternatives, the life cycle cost and inherent reliability improvements are driving many customers to this type of system.
• Now gaining wide acceptance on ITB’s, very large towboats and ocean class ships.

Horsepower Limiting
Horsepower limiting designs can reduce the size of the pumps/motors and therefore the generator power requirements by up to 50%.

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Typical Power Units

(click pictures to enlarge)

3 HP Standard	3 HP Yacht Standard	5 HP Twin Set Standard	5 HP Soft Shift - Yacht
7.5 HP Standard	15 HP Proportional	25 HP Standard	25 HP Dual Speed
30 HP USCG WLB with Oil Cooler	50 HP Proportional	60 HP Proportional

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Typical Controls

(click pictures to enlarge)

Steering Alarm Panel	Steering Control Panel	Aft Steering Selector Switch	Followup Levers - Main & Flanking
Full Followup Lever	Non Followup Levers	Rudder Angle Indicator (48690)	Local Control Units - Linked
Local Control Unit	Feedback Unit	Emergency Steering Station