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Product Tutorials > Steering System Tutorial >

Inboard Steering System Tutorial




SeaStar Inboard

 

INTRODUCTION
SeaStar Inboard Steering Systems are engineered and manufactured for all Pleasure and Work Boat applications up to 50ft. with some exceptions. See the Application Guide below for specific details.

For Commercial and Work Boat applications over 50ft. (11.5m) and Pleasure Boats not included in the Application Chart below please refer to our Capilano range of Inboard Steering Systems.

Features
• Regular duty aluminum cylinders.
• Heavy duty brass cylinders.
• Easy installation for single and dual rudder vessels.
• Cylinders supplied with bleeder fittings.
• Two axis articulation.
• Easy autopilot interface.

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Four steps to select a steering system for an inboard powered boat
Application Guide
Order Guide

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FOUR STEPS TO SELECT A STEERING SYSTEM FOR AN INBOARD POWERED BOAT

1. From the Application Guide below select the System Number appropriate for the vessel based on:
a) hull type – displacement or planing,
b) length of vessel,
c) number of rudders, and
d) usage of vessel.
2. From the Order Guide below select the appropriate helms and accessory hardware for each steering station.
3. From the Order Guide select the fitting and hose kits required for the installation.
4. Confirm that you have sufficient space available in:
a) the area the cylinder is to be mounted, and
b) the dash area for the steering components.

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APPLICATION GUIDE

BOAT LENGTH UP TO: PLANING HULL DISPLACEMENT HULL SAIL
SINGLE ENGINE TWIN ENGINE SINGLE ENGINE TWIN ENGINE SINGLE ENGINE
         
Pleasure Work Pleasure Work Pleasure Work Pleasure Work Pleasure Work
26FT (8.0M) 1 4 1 4 2 4 2 4 4 4
32FT (10.0M) 2 4 1 4 3 4 3 4 4 4
38FT (11.5M) 3 5 2 5 5 5 3 5 4 5
44FT (13.5M) 5 Ref 3 5 Ref Ref 5 Ref 5 Ref
50FT (15.0M) Ref Ref 5 Ref Ref Ref Ref Ref Ref Ref

a) Displacement Hull – maximum hull speed does not normally exceed 18 knots.
b) Planing Hull – maximum hull speed normally exceeds 18 knots.

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ORDER GUIDE

  DESCRIPTION QTY. REQ. MODEL PART NO.
1 4 Turns Lock to Lock
Cylinder 1 BA125-7ATM HC5312
Helm 1 SeaStar I–Standard * HH5271
Tube 1 3/8″ dia Nylon (note 1 & 3) HT5___
Oil 3 SeaStar Oil HA5430
For Extra Steering Station Add:
Helm 1 SeaStar I–Standard * HH5271
Fitting Kit 1 Add a Station HF5502
Extra Tube 1 3/8″ dia Nylon (note 1 & 3)  
Oil 1 SeaStar Oil HA5430

 

  DESCRIPTION QTY. REQ. MODEL PART NO.
2 5 Turns Lock to Lock
Cylinder 1 BA135-7ATM HC5313
Helm 1 SeaStar I–Standard * HH5271
Tube 1 3/8″ dia Nylon (note 1 & 3) HT5___
Oil 3 SeaStar Oil HA5430
For Extra Steering Station Add:
Helm 1 SeaStar I–Standard * HH5271
Fitting Kit 1 Add a Station HF5502
Extra Tube 1 3/8″ dia Nylon (note 1 & 3)  
Oil 1 SeaStar Oil HA5430

 

  DESCRIPTION QTY. REQ. MODEL PART NO.
3 6 Turns Lock to Lock
Cylinder 1 BA150-7ATM HC5314
Helm 1 SeaStar I–Standard * HH5271
Tube 1 3/8″ dia Nylon (note 1 & 3) HT5___
Oil 3 SeaStar Oil HA5430
For Extra Steering Station Add:
Helm 1 SeaStar I–Standard * HH5271
Fitting Kit 1 Add a Station HF5502
Extra Tube 1 3/8″ dia Nylon (note 1 & 3)  
Oil 1 SeaStar Oil HA5430

 

  DESCRIPTION QTY. REQ. MODEL PART NO.
4 4-1/4 Turns Lock to Lock
Cylinder 1 BA150-7TM HC5318
Helm 1 SeaStar II–Standard ** HH5272
Copper Tube 1 3/8″ dia Copper Tube (note 2 & 3) or  
SeaStar Hose 1 SeaStar Outboard Hose (note 2 & 3) HO5___
Oil 3 SeaStar Oil HA5430
For Extra Steering Station Add:
Helm 1 SeaStar II–Standard ** HH5272
Fitting Kit 1 Add a Station HF5502
Extra Tube 1 3/8″ dia Copper (note 2 & 3)  
Oil 1 SeaStar Oil HA5430

 

  DESCRIPTION QTY. REQ. MODEL PART NO.
5 5-1/2 Turns Lock to Lock
Cylinder 1 BA175-7TM HC5319
Helm 1 SeaStar II–Standard ** HH5272
Copper Tube 1 3/8″ dia Copper Tube (note 2 & 3) or  
SeaStar Hose 1 SeaStar Outboard Hose (note 2 & 3) HO5___
Oil 3 SeaStar Oil HA5430
For Extra Steering Station Add:
Helm 1 SeaStar II–Standard ** HH5272
Fitting Kit 1 Add a Station HF5502
Extra Tube 1 3/8″ dia Copper (note 2 & 3)  
Oil 1 SeaStar Oil HA5430

 

OPTIONAL EQUIPMENT PART NO.
Back Plate Kit (for use with Standard Helms) HA5418
20 Degree Wedge (for use with Standard Helms) HA5419
Autopilot Fitting Kit (for use with all Helms) HF5502
* Tilt Helm-SeaStar I HH5741
* Sport Tilt Helm-SeaStar I HH5291
* Rear Mount Helm-SeaStar I HH5261
** Tilt Helm-SeaStar II HH5742
** Sport Tilt Helm-SeaStar II HH5292
** Rear Mount Helm-SeaStar II HH5262

Notice
1. For systems 1, 2 & 3 – nylon tubing (3/8″ diameter) is the standard requirement for plumbing the system. Copper tubing (3/8″ diameter) can be substituted but Fitting Kit HF5507 is required.
2. For systems 4 & 5 – copper tubing (3/8″ diameter) is the standard requirement for plumbing the system. Fitting Kit HF5508 is required.
3. For systems 1, 2, 3, 4, & 5 SeaStar outboard hose can be substituted for nylon or copper tube. These hoses must be ordered in standard lengths. They cannot be cut to length.

Capilano

 

INTRODUCTION
Capilano Helms and Cylinders are engineered and manufactured for heavy duty marine usage, and are suitable for commercial, work boat and pleasure boat applications. Capilano Hydraulic Steering has been designed to meet ABS, Lloyds and DNV specifications.

For all Pleasure and Work Boat applications 38ft. (11.5m) and smaller with some exceptions, please refer to our SeaStar range of Inboard Steering Systems.

Features
• Regular duty aluminum cylinders.
• Heavy duty brass cylinders.
• Easy installation for single and dual rudder vessels.
• Cylinders supplied with bleeder fittings.
• Two axis articulation.
• Easy autopilot interface.

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Selection Guide
Cylinder Installation
Capilano Helm Pumps
Tubing, Hoses and Fitting Kits
Technical Information

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SELECTION GUIDE

MAXIMUM OUTPUT TORQUE APPROX. VESSEL SIZE (HULL LENGTH UP TO) HELM PUMP MODEL STEERING WHEEL TURNS CYLINDER MODEL REQUIRED
LB.IN. (Kg M) Planing Displacement   Min. Max. Fixed  
6,548 (75) 35′ (11m) 30′ (9m) 1250v 3.0 6 n/a BA 150-7TM
8,795 (100) 40′ (12m) 38′ (11.5m) 1250V 4.0 8 n/a BA 175-7TM
12,134 (140) 50′ (15m) 45′ (14m) 1250v 5.5 11 n/a BA 200-7TM
12,134 (140) 50′ (15m) 45′ (14m) 1275V 3.5 7 n/a BA 200-7TM
14,766 (170) 50′ (15m) 45′ (14m) 1275V 4.0 8 n/a 2 x BA 150-7TM
19,900 (230) 55′ (17m) 50′ (15m) 1275V 5.5 11 n/a BA 200-11TM
19,902 (230) 55′ (17m) 50′ (15m) 1275V 5.5 11 n/a 2 x BA 175-7TM
26,322 (300) 60′ (18m) 55′ (17m) 1275V 7.5 15 n/a 2 x BA 200-7TM
28,890 (332) -a- -a- -a- -a- 1350 n/a n/a 5.5 BA 175-11TM
39,162 (450) -a- -a- -a- -a- 1350 n/a n/a 7.5 BA 200-11TM

a) Consult Manufacturer for hull lengths.

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CYLINDER INSTALLATION
Proper cylinder installation is the key to the successful operation of the hydraulic steering system. An incorrectly installed cylinder is subject to rapid seal and bearing wear and non-repairable damage.

 

An imaginary line drawn through the tiller arm hole at both hard over positions will create the cylinder centre line. With tiller arm at hard over positions, angle X and Y should be the same. Select the diagram and dimensional data that corresponds with your cylinder model.

Notice
Not all possible cylinder mounting configurations are shown, however, all necessary dimensions are shown regardless of mounting configurations.

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CAPILANO HELM PUMPS
1250V, 1275V & 1350

A unique variable displacement feature on the 1250V and 1275V helms allows the helms-person to adjust the amount of steering wheel turns to their preference within a predetermined range. The 1350 helm is a fixed displacement pump.

1250V & 1275V Helm Pumps

1350 Helm Pump
 

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TUBING, HOSES and FITTING KITS
The use of seamless soft annealed refrigeration copper tubing, type L is recommended. If flexible hose is required, use hose that has a minimum operating pressure of 1000PSI, a burst pressure of 5000PSI and the lowest available expansion factor. The 1250V requires the use of 1/2″ OD copper tube while the 1275V requires the use of 5/8″ OD copper tube. The 1350 Helm Pump requires the use of 3/4″ OD copper tube.

Cylinder Hoses
Steering systems installed with copper tubing require short pieces of flexible hose to accommodate slight cylinder movement. Hoses are supplied with 1/2″ swivel flare nuts on each end. Hoses are sold as a pair for single cylinder applications and separately for the variables of twin cylinder installations.

PART NO. DESCRIPTION
The following hoses are for single cylinder applications.
Cylinder Hose Kit, inc. two hoses 18″ (0.45m) long HA5731
The following hoses are for twin cylinder applications, select four hoses as required.
Cylinder Hose, (one) 2′ (0.6m) long, 1250V & 1275V HA5732
Cylinder Hose, (one) 3′ (0.9m) long, 1250V & 1275V HA5733
Cylinder Hose, (one) 4′ (1.2m) long, 1250V & 1275V HA5734
Cylinder Hose, (one) 5′ (1.5m) long, 1250V & 1275V HA5735
Cylinder Hose, (one) 6′ (1.8m) long, 1250V & 1275V HA5736
Cylinder Hose & Manifold, (Four) 2′ (0.6m) long, 1350V HA0733
Cylinder Hose & Manifold, (Two) 2’8″ (0.8m) and (Two) 3’7″ (1.07m) long, 1350V HA0734

Fitting Kits

Single steering station and additional steering station S.A.E. flare tube fitting kits are available for use with 1/2″ O.D. and 5/8″ O.D. copper tubing.

DESCRIPTION PART NO.
Fitting Kit, single station, 1/2″ copper tube HF5590
Fitting Kit, additional station, 1/2″ copper tube HF5591
Fitting Kit, single station, 5/8″ copper tube HF5592
Fitting Kit, additional station, 5/8″ copper tube HF5593

Fill and Vent Plug Kit
This kit will facilitate filling and purging of the steering system at a more convenient and accessible area than the helm pump. A through dash fitting, complete with a waterproof vent plug, 18″ (0.45m) long vinyl tube and elbow fittings are supplied with this kit
 

PART NO. DESCRIPTION
HA5450 Fill and Vent Plug Kit

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TECHNICAL INFORMATION

HELM PUMP 1250v 1275v 1350
Displacement 1.7cu.in. – 3.4 cu.in. (27.8 cc – 55.7cc) 2.7cu.in. – 5.4 cu.in. (44.2 cc – 88.4cc) 8 cu.in. (131 cc)
Relief Valve 1000 PSI – (70 Bar) 1000 PSI – (70 Bar) 1000 PSI – (70 Bar)
Ports 3/8″ NPT 3/8″ NPT 1/2″ NPT

 

STEERING WHEEL SIZE 1250v 1275v 1350
Minimum Diameter 20″ (500mm) 26″ (660mm) 30″ (760mm)
Maximum Diameter 36″ (941mm) 36″ (941mm) 48″ (1220mm)

 

HELM PUMP SHAFT 1250v / 1275v 1350
  3/4″ Standard Taper 1″ per ft. 5/8″ NF threads 3/16″ Key 1-1/4″ (317mm) dia. Straight 3/16″ Key

 

CYLINDER MODEL SPECIFICATION
CYLINDER MODEL STROKE VOLUME TORQUE @ 1000psi 70 bar @ 35 Degrees
BA 150-7 models 7″–178 mm 10.2 cu.in. (167cc) 7117 in/lbs (81 Kg)
BA 175-7 models 7″–178 mm 13.7 cu.in. (225cc) 9569 in/lbs (110 Kg)
BA 200-7 models 7″–178 mm 18.9 cu.in. (310cc) 13200 in/lbs (151 Kg)
BA 200-11 models 11″–279 mm 29.7 cu.in. (486cc) 19900 in/lbs (228 Kg)
2x 150-7 models 7″–178 mm 23.0 cu.in. (377cc) 15800 in/lbs (181 Kg)
2x 175-7 models 7″–178 mm 31.0 cu.in. (508cc) 21400 in/lbs (245 Kg)
2x 200-7 models 7″–178 mm 41.0 cu.in. (672cc) 28700 in/lbs (329 Kg)

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Hynautic

 

INTRODUCTION
SeaStar offers rugged 3-line Hynautic Heavy Duty steering systems for most work and pleasure vessels up to 70 feet.

Heavy Duty helms combine one or two bi-directional axial piston pumps with pilot check and make-up check valving. The result is a unit which prevents rudder feedback, is very efficient (even at low RPM), and is immediately adaptable to multi-station use.

A wide choice of helm displacements and cylinder configurations make it easy to spec a system which can handle a variety of large boat performance requirements and accommodate most user preferences.

Features
• Low friction heavy duty hydraulic steering.
• Helm/cylinder combinations for most inboards. Marine grade materials.
• Heavy duty helms available in three displacements, to accommodate most applications and user preferences.
• Helms available with 1” straight shaft or 3/4” tapered. Mount facing any direction.
• Quick air purge relief valve.
• Fluid fill at remote reservoir.
• Heavy duty brass cylinders. Two-axis articulation. Easy installation for single or dual rudder vessels.
• Meets or exceeds applicable standards.
• Accepts most steering wheels.

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Application Guide
Order Guide
Helm Optins
Tubing Hose Options
Cylinder Options

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APPLICATION GUIDE

FOR VESSEL SIZES UP TO: HELM PUMP MODEL STEERING WHEEL
TURNS
REQUIRES CYLINDER MODEL
(2x = 2 Cylinders)
TUBING DIAMETERS
when distance from Cylinder to farthest Helm is:
MAX. SUGG. H.P. SUGG. AREA FEET
(meters)
40 Feet
or Less
40 Feet
or More
Planing Hulls
35-50′ (11-15m) H-21 or H-25 5.0 HC5350 or HC5356 1/2” 5/8” 450 -
40-50′ (10-18m) H-21 or H-25 6.8 HC5351 or HC5357 1/2” 5/8” 750 -
40-50′ (10-18m) H-42 4.7 HC5351 or HC5357 1/2” 5/8” 750 -
45-60′ (14-18m) H-42 7.4 HC5378 or HC5379 1/2” 5/8” 950 -
45-60′ (14-18m) H-41 5.4 HC5378 or HC5379 1/2” 5/8” 950 -
55-65′ (17-20m) H-41 5.4 HC5378 or HC5379 1/2” 5/8” 1200 -
to 70′ (to 21m) H-41 10.8 2x HC5378 or HC5379 1/2” 5/8” 1500 -
to 70′ (to 21m) H-41 14.2 2x K-8 1/2” 5/8” 1500 -
Displacement Hulls – Tug Boats, Net Haulers
to 30′ (6-9m) H-21 or H-25 5.0 HC5350 or HC5356 1/2” 5/8” 200 -
30-35′ (6-11m) H-21 or H-25 6.8 HC5351 or HC5357 1/2” 5/8” 250 -
30-35′ (6-11m) H-42 4.7 HC5351 or HC5357 1/2” 5/8” 250 -
26-40′ (8-12m) H-42 7.4 HC5378 or HC5379 1/2” 5/8” 400 -
26-40′ (8-12m) H-41 5.4 HC5378 or HC5379 1/2” 5/8” 400 -
30-45′ (9-14m) H-41 5.4 HC5378 or HC5379 1/2” 5/8” 450 -
to 50′ (to 15m) H-41 10.8 2x HC5378 or HC5379 1/2” 5/8” 500 -
to 50′ (to 15m) H-41 14.2 2x K-8 1/2” 5/8” 500 -
to 50′ (to 15m) H-41 20.0 2x K-9 1/2” 5/8” 500 -
Displacement Hulls – Work and Pleasure Boats
to 40′ (9-12m) H-21 or H-25 5.0 HC5350 or HC5356 1/2” 5/8” 300 -
40-45′ (12-14m) H-21 or H-25 6.8 HC5351 or HC5357 1/2” 5/8” 350 -
40-45′ (12-14m) H-42 4.7 HC5351 or HC5357 1/2” 5/8” 350 -
40-55′ (12-17m) H-42 7.4 HC5378 or HC5379 1/2” 5/8” 500 -
40-55′ (12-17m) H-41 5.4 HC5378 or HC5379 1/2” 5/8” 500 -
45-65′ (14-20m) H-41 5.4 HC5378 or HC5379 1/2” 5/8” 650 -
to 75′ (to 23m) H-41 10.8 2x HC5378 or HC5379 1/2” 5/8” 750 -
to 75′ (to 23m) H-41 14.2 2x K-8 1/2” 5/8” 750 -
Sail Boats – Skeg Rudder
to 40′ (9-12m) H-21 or H-25 5.0 HC5350 or HC5356 1/2” 5/8” - 9 (.9)
40-45′ (12-14m) H-21 or H-25 6.8 HC5351 or HC5357 1/2” 5/8” - 10 (1)
40-45′ (12-14m) H-42 4.7 HC5351 or HC5357 1/2” 5/8” - 10 (1)
40-52′ (12-16m) H-42 7.4 HC5378 or HC5379 1/2” 5/8” - 17 (1.6)
40-52′ (12-16m) H-41 5.4 HC5378 or HC5379 1/2” 5/8” - 17 (1.6)
50-60′ (15-18m) H-41 5.4 HC5378 or HC5379 1/2” 5/8” - 18 (1.7)
to 65′ (to 20m) H-41 10.8 2x HC5378 or HC5379 1/2” 5/8” - 20 (1.9)
to 65′ (to 20m) H-41 14.2 2x K-8 1/2” 5/8” - 20 (1.9)
Sail Boats – Spade Rudder
to 40′ (9-12m) H-21 or H-25 5.0 HC5350 or HC5356 1/2” 5/8” - 7 (.6)
40-45′ (12-14m) H-21 or H-25 6.8 HC5351 or HC5357 1/2” 5/8” - 8 (.7)
40-45′ (12-14m) H-42 4.7 HC5351 or HC5357 1/2” 5/8” - 8 (.7)
35-46′ (11-16m) H-42 7.4 HC5378 or HC5379 1/2” 5/8” - 15 (1.4)
35-46′ (11-16m) H-41 5.4 HC5378 or HC5379 1/2” 5/8” - 15 (1.4)
40-50′ (12-15m) H-41 5.4 HC5378 or HC5379 1/2” 5/8” - 15.5 (1.4)
to 60′ (to 18m) H-41 10.8 2x HC5378 or HC5379 1/2” 5/8” - 16.5 (1.5)
to 60′ (to 18m) H-41 14.2 2x K-8 1/2” 5/8” - 16.5 (1.5)

Notice
The application guide should be used with discretion. The chart is only a guide to selecting a steering system. A steering system manufacturer cannot anticipate all the variables in boat-rudder design that affect the steering loads. It is the final responsibility of the boat builder/designer to specify maximum expected steering loads. If the required information is not available, please see the Displacement and Planning Hull data sheets on page 10-21 and page 10-22. These sheets after being completely filled out can be faxed to Teleflex Technical Support at 604-279-2202.

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ORDER GUIDE

DESCRIPTION PART NO.
Components
Hynautic H-20 helm (1” straight shaft) H-21 or
Hynautic H-20 helm (3/4” tapered shaft) H-25 or
Hynautic H-40 helm (1” straight shaft) H-42 or
Hynautic H-40 helm (3/4” tapered shaft) H-42-02 or
Hynautic H-40 helm (1” straight shaft) H-41 or
Hynautic H-40 helm (3/4” tapered shaft) H-41-02
H-20 Fittings Kit for Main Station HF-10
H-40 Fittings Kit for Main Station HF-21
Inboard Cylinder HC5350
Reservoir – Standard (2 quart) R-06
Relief Valve (950 PSI) MSV-21
Relief Fittings (1150 & 1175-21-1) MSVF-07
Relief Fittings (1175-42-1 & up) MSVF-13
Copper Tubing 1/2” or 5/8” OD
Fitting Kit (for 1/2” Copper Tubing) HF5590 or
Fitting Kit (for 5/8” Copper Tubing) HF5592
Hose Kit for Copper Tubing (2 hoses) HA5731
SeaStar Oil (1 Gallon) HA5440
Options
Pivot Mount Inboard Cylinder K-31
Dual Cylinder Hose 2’ (.6m) HA5732
Dual Cylinder Hose 3’ (.9m) HA5733
Dual Cylinder Hose 4’ (1.2m) HA5734
Dual Cylinder Hose 5’ (1.5m) HA5735
Dual Cylinder Hose 6’ (1.8m) HA5736
Reservoir (2 quart, with hand pump) R-07
Reservoir (1 quart, with hand pump) R-11
Reservoir (2 quart) R-12
Relief Valve (500 PSI) MSV-19
Reservalve (500 PSI, top read, 3/8) RV-55
Reservalve (500 PSI, top read, 3/8, w/pump) RV-55P
Reservalve (500 PSI, top read, 5/16, w/pump) RV-57
Reservalve (950 PSI, top read, 5/16) RV-60
Reservalve (950 PSI, frt.read, 5/16, w/pump) RV-67
H-20 Fittings Kit for Second Station HF-11
H-40 Fittings Kit for Second Station HF-22
Service Items
Reservoir (2 quart, with hand pump) R-07
Reservoir (1 quart, with hand pump) R-11
Reservoir (2 quart) R-12
Relief Valve (500 PSI) MSV-19
Reservalve (500 PSI, top read, 3/8) RV-55
Reservalve (500 PSI, top read, 3/8, w/pump) RV-55P
Reservalve (500 PSI, top read, 5/16, w/pump) RV-57
SeaStar Oil (1 Gallon) HA5440

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HELM OPTIONS

Four helms are offered in 3 displacements, as noted in the chart at right. The H-21 helm has a 1″ straight wheel shaft; H-25 has a 3/4″ tapered shaft. The H-42 and H-41 helms both have a 1″ straight wheel shaft.

HELM PART NO. DISPLACEMENT RANGE RELIEF VALVE STEERING
H-21 2.75 cu.in. 950 psi (66Bar)
H-25 2.75 cu.in. 950 psi (66Bar)
H-42 4.00 cu.in. 950 psi (66Bar)
H-41 5.50 cu.in. 950 psi (66Bar)

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TUBING / HOSE OPTIONS

Use soft refrigeration type copper tubing for optimum performance. For tube-to-cylinder flex hoses, select a hydraulic hose rated for 1000 PSI (70 bar) working pressure, and with a very low volumetric expansion rating.

HELM TYPE DISTANCE—CYLINDER TO FURTHEST HELM
40 FEET OR LESS MORE THAN 40 FEET
All 1/2″ O.D. Copper Tubing 5/8″ O.D. Copper Tubing

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CYLINDER OPTIONS

Cylinders are made from brass & stainless steel. Available with stainless rod & ball joint (TMB models) or stainless rod & bronze clevis (TMC models.) Cylinders with ball joints have 2-axis articulation.
The K-31 is an optional pivot mount cylinder which can be used in the systems numbered “8a” and “8b” on the opposite page. With this cylinder, the number of wheel turns becomes 6.4 (using the H-42 helm) or 4.6 (H-41 helm).

MODEL PART NO. DESCRIPTION / MODEL / ROD END CONFIG
7″ Stroke: HC5350 Cylinder BA175-7TMB (Rod End Ball Joint)
HC5350 Cylinder BA175-7TMB (Rod End Ball Joint)
HC5350 Cylinder BA175-7TMB (Rod End Ball Joint)
HC5350 Cylinder BA175-7TMB (Rod End Ball Joint)
11″ Stroke: HC5378 Cylinder BA200-11TMB (Rod End Ball Joint)
HC5379 Cylinder BA200-11TMC (Rod End Ball Clevis)

SeaStar Inboard

 

INTRODUCTION
SeaStar Inboard Steering Systems are engineered and manufactured for all Pleasure and Work Boat applications up to 50ft. with some exceptions. See the Application Guide below for specific details.

For Commercial and Work Boat applications over 50ft. (11.5m) and Pleasure Boats not included in the Application Chart below please refer to our Capilano range of Inboard Steering Systems.

Features
• Regular duty aluminum cylinders.
• Heavy duty brass cylinders.
• Easy installation for single and dual rudder vessels.
• Cylinders supplied with bleeder fittings.
• Two axis articulation.
• Easy autopilot interface.

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Four steps to select a steering system for an inboard powered boat
Application Guide
Order Guide

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FOUR STEPS TO SELECT A STEERING SYSTEM FOR AN INBOARD POWERED BOAT

1. From the Application Guide below select the System Number appropriate for the vessel based on:
a) hull type – displacement or planing,
b) length of vessel,
c) number of rudders, and
d) usage of vessel.
2. From the Order Guide below select the appropriate helms and accessory hardware for each steering station.
3. From the Order Guide select the fitting and hose kits required for the installation.
4. Confirm that you have sufficient space available in:
a) the area the cylinder is to be mounted, and
b) the dash area for the steering components.

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APPLICATION GUIDE

BOAT LENGTH UP TO: PLANING HULL DISPLACEMENT HULL SAIL
SINGLE ENGINE TWIN ENGINE SINGLE ENGINE TWIN ENGINE SINGLE ENGINE
         
Pleasure Work Pleasure Work Pleasure Work Pleasure Work Pleasure Work
26FT (8.0M) 1 4 1 4 2 4 2 4 4 4
32FT (10.0M) 2 4 1 4 3 4 3 4 4 4
38FT (11.5M) 3 5 2 5 5 5 3 5 4 5
44FT (13.5M) 5 Ref 3 5 Ref Ref 5 Ref 5 Ref
50FT (15.0M) Ref Ref 5 Ref Ref Ref Ref Ref Ref Ref

a) Displacement Hull – maximum hull speed does not normally exceed 18 knots.
b) Planing Hull – maximum hull speed normally exceeds 18 knots.

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ORDER GUIDE

  DESCRIPTION QTY. REQ. MODEL PART NO.
1 4 Turns Lock to Lock
Cylinder 1 BA125-7ATM HC5312
Helm 1 SeaStar I–Standard * HH5271
Tube 1 3/8″ dia Nylon (note 1 & 3) HT5___
Oil 3 SeaStar Oil HA5430
For Extra Steering Station Add:
Helm 1 SeaStar I–Standard * HH5271
Fitting Kit 1 Add a Station HF5502
Extra Tube 1 3/8″ dia Nylon (note 1 & 3)  
Oil 1 SeaStar Oil HA5430

 

  DESCRIPTION QTY. REQ. MODEL PART NO.
2 5 Turns Lock to Lock
Cylinder 1 BA135-7ATM HC5313
Helm 1 SeaStar I–Standard * HH5271
Tube 1 3/8″ dia Nylon (note 1 & 3) HT5___
Oil 3 SeaStar Oil HA5430
For Extra Steering Station Add:
Helm 1 SeaStar I–Standard * HH5271
Fitting Kit 1 Add a Station HF5502
Extra Tube 1 3/8″ dia Nylon (note 1 & 3)  
Oil 1 SeaStar Oil HA5430

 

  DESCRIPTION QTY. REQ. MODEL PART NO.
3 6 Turns Lock to Lock
Cylinder 1 BA150-7ATM HC5314
Helm 1 SeaStar I–Standard * HH5271
Tube 1 3/8″ dia Nylon (note 1 & 3) HT5___
Oil 3 SeaStar Oil HA5430
For Extra Steering Station Add:
Helm 1 SeaStar I–Standard * HH5271
Fitting Kit 1 Add a Station HF5502
Extra Tube 1 3/8″ dia Nylon (note 1 & 3)  
Oil 1 SeaStar Oil HA5430

 

  DESCRIPTION QTY. REQ. MODEL PART NO.
4 4-1/4 Turns Lock to Lock
Cylinder 1 BA150-7TM HC5318
Helm 1 SeaStar II–Standard ** HH5272
Copper Tube 1 3/8″ dia Copper Tube (note 2 & 3) or  
SeaStar Hose 1 SeaStar Outboard Hose (note 2 & 3) HO5___
Oil 3 SeaStar Oil HA5430
For Extra Steering Station Add:
Helm 1 SeaStar II–Standard ** HH5272
Fitting Kit 1 Add a Station HF5502
Extra Tube 1 3/8″ dia Copper (note 2 & 3)  
Oil 1 SeaStar Oil HA5430

 

  DESCRIPTION QTY. REQ. MODEL PART NO.
5 5-1/2 Turns Lock to Lock
Cylinder 1 BA175-7TM HC5319
Helm 1 SeaStar II–Standard ** HH5272
Copper Tube 1 3/8″ dia Copper Tube (note 2 & 3) or  
SeaStar Hose 1 SeaStar Outboard Hose (note 2 & 3) HO5___
Oil 3 SeaStar Oil HA5430
For Extra Steering Station Add:
Helm 1 SeaStar II–Standard ** HH5272
Fitting Kit 1 Add a Station HF5502
Extra Tube 1 3/8″ dia Copper (note 2 & 3)  
Oil 1 SeaStar Oil HA5430

 

OPTIONAL EQUIPMENT PART NO.
Back Plate Kit (for use with Standard Helms) HA5418
20 Degree Wedge (for use with Standard Helms) HA5419
Autopilot Fitting Kit (for use with all Helms) HF5502
* Tilt Helm-SeaStar I HH5741
* Sport Tilt Helm-SeaStar I HH5291
* Rear Mount Helm-SeaStar I HH5261
** Tilt Helm-SeaStar II HH5742
** Sport Tilt Helm-SeaStar II HH5292
** Rear Mount Helm-SeaStar II HH5262

Notice
1. For systems 1, 2 & 3 – nylon tubing (3/8″ diameter) is the standard requirement for plumbing the system. Copper tubing (3/8″ diameter) can be substituted but Fitting Kit HF5507 is required.
2. For systems 4 & 5 – copper tubing (3/8″ diameter) is the standard requirement for plumbing the system. Fitting Kit HF5508 is required.
3. For systems 1, 2, 3, 4, & 5 SeaStar outboard hose can be substituted for nylon or copper tube. These hoses must be ordered in standard lengths. They cannot be cut to length.






  
       


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**The price is subject to change at anytime without any notice.  We are not responsible for any typographical errors.  Any products can be cancelled from sale at any time.

** All Products sold here are Brand New unless specified Otherwise and come with Full Manufacturer's Warranty

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