Propulsion systems ZF

"Marine Technics" represents on exclusive basis ZF maneuvering propulsion devices:

-         Well-Mounted thrusters

-         CRP thrusters

-         Retractable thrusters

-         Deck-Unit thrusters

-         Shallow Draft thrusters

-         Tunnel thrusters

-         Multi Thruster Control System

HRP Engineering Capabilities: 

• Customer input and feed-back
• ISO 9001 quality assurance that includes engineering process
• classification rules and regulations
• 30-years experience in thruster designs
• Use of latest 3-D design software
• Mastering of calculation programs for gears, shafts, bearings and all other strength and life-time calculations

Thruster Overview 

DP Thruster Choices

Pro’s and con’s tunnel thrusters: 

Advantages retractable to tunnel thrusters: 

• 360º steering capability;
• At least 25% better thrust/hp ratio;
• Less noisy;
• Get-you-home-device;
• Acts as propulsion stand-by device as well.

Limitations of conventional Thrusters:

• Limitations in vessel draft;
• Limitations in available height and space inside vessel. Limitations in vessel draft;
• Limitations in available height and space inside vessel.

Shallow Draft Thruster:

Built-in comparison:

Shallow Draft Thruster:

Major advantages:

• 360° steering, no thrust deduction in any angle;
• Compact design;
• Required height less than retractable azimuth thruster;
• No vulnerable parts under the hull;
• Water intake velocity is very low;
• Maintenance friendly.

Shallow Draft Thruster Drive Line:

Shallow Draft Thruster Steering Mechanism:

Thrust/Ship velocity comparison:

Future developments