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Seastar Hydraulic Power Steering

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Description

SEASTAR

OUR BEST STEERING SYSTEM SEASTAR INBOARD POWER STEERING

SeaStar Hydraulic Power
Steering system:
Steering today’s high horsepower luxury yachts
and commercial craft all too often challenges
physical endurance and cruising enjoyment on the
water.
SeaStar Power Steering provides the ultimate in
comfort, simplicity, safety and reliability.
Superior design and manufacturing deliver an
outstanding, rugged product — in the SeaStar
tradition.

Applications:
Vessels up to 120 feet (planing hulls using twin 2.5” bore
cylinders).

Features:

  • Effortless steering at any speed.
  • Responsive 3-1/2 turns lock-to-lock. (Number of
    turns can be varied by helm.)
  • Multiple steering stations can be installed.
  • Compact helm has only a 4-7/16” footprint —
    needs only 3” dash hole.
  • Tilt Steering available (requires larger dashboard hole).
  • Standard 3/4” tapered steering shaft
    (1” straight or tapered versions available).
  • Simplified installation.
  • Easy autopilot interface.
  • Automatic manual back-up steering.
  • Meets A.B.Y.C./N.M.M.A. standards.

How it Works:
SeaStar hydraulic power steering uses the ship’s engine(s) to provide the “power” for the steering system, via a mechanically or electric motor driven hydraulic pump.

A manual hydraulic steering system, consisting of a standard SeaStar helm and a hydraulic steering cylinder (fitted with an integral servo cylinder and a power steering valve), supplies the “control” portion of the steering system.

Under normal conditions, with engines running, a hydraulic oil supply is in a stand-by mode, ready to be directed to the steering cylinder as dictated by the steering wheel, servo cylinder and power steering valve.

Turning the steering wheel left or right makes the system go from “stand-by” into “operating” mode and move the steering cylinder accordingly.

In the event of a power source failure, hydraulic oil from the steering helm is automatically diverted into the servo and steering cylinder, providing the helmsman with manual back-up steering.

An engine room mounted oil reservoir allows easy fill and assists the in-line cooler in cooling the hydraulic oil.

An in-line oil filter helps to protect the steering system components against contaminants.

How to Spec a System:
1. Vessel size and hull type determine the kind of cylinder required. (All boats over 70 feet in length should have
steering loads reviewed by SeaStar Solutions.)

2. Engine type determines which power steering pump should be used. If in doubt, contact SeaStar Solutions.

3. A SeaStar 1.7 helm is recommended; this will result in a system with 3-1/2 wheel turns lock-to-lock when 9” stroke
cylinders are used. If a different number of wheel turns is desired, contact SeaStar Solutions for recommended
helm to achieve desired number of steering wheel turns.

Seastar inboard steering components:


 

Seastar inboard steering components (Cont.):

 

Application Guide: Seastar Power Steering Cylinders
The chart below is only a guide to selecting a steering system. A steering system maker cannot anticipate
all the variables in boat-rudder design that affect steering loads. It is the final responsibility of the boat
designer/builder to specify maximum expected steering loads. If the required information is not available,
contact customer service with rudder dimensions, vessel size and anticipated maximum speed. Boats
over 70 feet should have steering loads reviewed by SeaStar Solutions.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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