Products
- Azimuth Thrusters
  360° rotating Azimuth thrusters are used when enhanced maneuverability is required in applications such as dynamic positioning, ship escort, and ship docking services.
  
  Portable Dynamic Positioning
  Quick dock-side conversion of any vessel to DP-0 thru DP-3 per any of the major classification societies.
  
  Outboard Propulsion Units
  Outboard propulsion units are self-contained thruster packages for main propulsion and positioning of barges, platforms and river craft.
  
  Retractable Thrusters
  Thrustmaster retractable thrusters are thru-hull azimuthing thrusters using fixed pitch propellers at variable speed.
  
  Water Jets
  Axial flow water jets from 100kW to 6,400 kW available in 15 model sizes to accommodate vessels from 6m to +60m with stainless steel jets supported by electronic controls.
  
  Tunnel Thrusters
  Tunnel thrusters for docking, slow speed maneuvering, emergency steering, and station keeping at zero or slow forward speeds.
  
  Portable River Ferry
  Turn-key modular package comprised of interlocking barge sections with ramps on both ends, self-contained hydraulic outboard propulsion units, a raised pilot house, and all necessary accessories.
  
  Hybrid Propulsion Systems
  Turn-key patented and proven hybrid propulsion packages offering a seamless integration with the vessel. Designs tailed to the vessel size, speed, transit route, and operational profile.
  
  T-Pod Electric Podded Thrusters
  Thrustmaster T-Pods are configured with a permanent magnet motor directly driving the propeller shaft in a pod housing.
  
  Floatmaster
  Floatmaster is a sister company of Thrustmaster of Texas, Inc., a world recognized designer and manufacturer of marine propulsion systems.
Applications
- Offshore Applications
  
  Accommodation Barges
  
  AHTS
  
  Barges
  
  Crane Vessel
  
  Diving Support Vessel – DSV
  
  Drillships
  
  Fast Supply Vessel – FSV
  
  FPSO
  
  Heavy Lift Crane Barges
  
  Jackups
  Lift Boat
  
  OSV
  
  Pipelay Vessel
  
  PSV
  
  Rapid Deployment Oil Spill Response Systems
  
  Research Vessels
  
  Safety / Standby Vessel
  
  Semi-Submersible
  
  Underwater Construction Vessel
  
  Well Stimulation
  Marine Applications
  
  Cable Layers
  
  Cruise Ships
  
  Dredge
  
  Ferries
  
  Fishing Vessel
  
  Heavy Lift
  
  Ro Ro / ROLO
  
  Tugs
  Inland & Coastal Waterways
  
  Articulated Tug Barges
  
  Ferry
  
  Hybrid Propulsion Systems
  
  Patrol Vessels
  
  Towboat Z-Drives
  
  Tug Boat
  Offshore Wind Applications
  
  Cable Installation Vessels
  
  Offshore Wind Turbine Maintenance Vessels
  
  Wind Turbine Feeder Barge
  
  Wind Turbine Installation Vessels
  
  Wind Turbine Support Vessel
  Military Applications
  
  Amphibious Vehicles
  
  Frigate
  
  Mine Clearance
  
  Patrol
Company
- About Us
  
  Thrustmaster Corporate Brochure
  Thrustmaster of Texas, Inc. manufactures heavy duty commercial marine propulsion and thrusters. The factory and production of all thrusters is based out of Houston, Texas with a global network of sales offices in Rotterdam, Singapore, China, Dubai, and Brazil. A service office is located in Houma, Louisiana to assist offshore clients.
  
  All thrusters are developed in-house by a complete engineering department for mechanical, hydraulic, electrical and electronic design. Tooling includes machining and measuring equipment, CAD, vessel resistance and propulsion, 3D modeling and ANSYS Finite Element Analysis. The application of modal analysis, stress and strain analysis as well as rotor dynamic analysis of drive trains and transmissions are fundamentals towards the reliability and quality of Thrustmaster’s products.
  Learn More > | Our History > | Our Facility >
  Careers
  
  View All Open Positions
  
  Events
  
  View All Upcoming Events
  
  Thrustmaster Customer Training
  
  View All Available Customer Training
  Contact
  
  Phone - 713-937-6295
  Thrustmaster of Texas, Inc.
  6900 Thrustmaster Drive
  Houston, Texas 77041 USA
News
eThrust
Contact
Customer Support

ADVANCED MARINE PROPULSION DESIGN & MANUFACTURING

Workmaster Hydraulic Outboard Propulsion Units

Workmasters™ are deck-mounted or transom-mounted hydraulic propulsion units. Workmaster™ models range from 35 to 1,000 HP. They feature steering through 180° and proportional propeller speed control in forward and reverse, providing omnidirectional thrust capability. Hydraulic power kick-up and propeller depth adjustment are available. Matched to application from stock components.

The outboard drive assembly includes the steering actuator, drive and stem rotation mechanisms, outboard stem, propeller hydraulic motor, propeller, and the outboard tilt mechanism. Routine servicing of the outdrive does not require disassembly of the unit.

Send a Sales Inquiry

View Specs

Downloads

Pivot Points

Pivot points are incorporated in the outboard drive to allow elevation of the stem for inspection or maintenance. Elevation (tilt) is accomplished without disconnecting the outboard drive from the main power source so that operational control may be returned immediately and to permit maintenance and repair without employing divers or dry-docking the vessel.

Steering System

Each propulsion unit is equipped with electric over hydraulic steering, with a hydraulic steering actuator interconnected with a drive and rotation mechanism powered by the steering and tilt hydraulic pump. The unit steers 180 degrees, port to starboard, while subjected to full propeller thrust, facilitating the vessel's ability to maneuver nearly independent of wind and wave excitation forces.

Hydraulic Propulsion Motor

The hydraulic propulsion motor is a bi-directional, variable-speed motor directly driving the propeller shaft. The hydraulic motor is installed inside the fabricated steel lower outdrive housing. The propeller shaft is supported by large, oil-lubricated taper roller bearings. The motor produces the required propeller rotative speed and is capable of complete direction reversal at full speed and torque in less than five (5) seconds. Propeller speed can be infinitely controlled in both forward and reverse directions providing excellent maneuvering ability and performance equivalent to controllable pitch propellers. Pressure limiters and cross reliefs protect the hydraulic transmission in the event of propeller blockage. The propeller can be stalled at any time without causing damage to the transmission.

Service Life

The propeller shaft oil-lubricated taper roller bearings have an L10 service life in excess of 20,000 hours based on operation at full load.

Outdrive Mounting

The outboard drive assembly is supported by a common steel skid integrated with the diesel-hydraulic power unit or a steel mini-skid arrangement, containing the hydraulic tilt cylinders and suitable for mounting to the vessel's deck at the transom by bolt-down or welding.

Hydraulic Power-Tilt System

The propulsion unit incorporates a hydraulic power tilt system capable of elevating the outboard drive assembly through an arc of 90 degrees. Hydraulic oil supply for the power tilt mechanism is supplied by the steering and tilt hydraulic pump. Power tilt hydraulic cylinders and piston rods are constructed of suitable alloys to prevent marine atmospheric corrosion. The cylinders are of sufficient volume and stroke to provide the full 90 degree arc of the outboard drive while subjected to full propeller thrust loading.

The hydraulic power tilt system incorporates cross-port relief valves that allow the outdrive assembly to kick up in the event it encounters a subsurface obstruction or in the case of grounding, making them ideal for shallow draft applications.

Propeller Depth Adjustment Mechanism

An optional propeller depth adjustment mechanism can be provided to vary the propeller depth for light and loaded draft conditions. Hydraulic oil supply for the mechanism is supplied by the steering and tilt hydraulic pump. When the vessel is in shallow water, the propeller can be lifted above or even with the baseline; when in deep water, the propeller can be lowered below the baseline for maximum propulsive efficiency.

Propellers and Nozzles

Open-wheel units are with a Gawn-series, 4-blade, high-thrust, manganese-bronze monoblock propeller. A heavy-duty anti-cavitation plate covers the propeller to prevent vortexing at light ship displacements. Nozzle units are equipped with a Kaplan accelerator-series, 4-blade manganese-bronze monoblock propeller inside a Kort 19A style steel nozzle. The propeller diameter, blade pitch and area ratio is calculated to provide either maximum static bollard thrust or maximum thrust at the required vessel speed taking into account the vessel draft conditions.

Technical Specs