Share
Key benefits
GravityVibe™ gives you tangible operational gains across performance, safety, and sustainability.
Its patented vibration system lets you handle a wider variety of bulk materials, maintaining smooth cargo flow even for materials with high internal friction.
Lower slope-angle designed sliding panels increases hold capacity by up to 20% versus a conventional selfunloader system, improving transport efficiency and reducing emissions per carried tonne.
With fewer moving parts and minimal maintenance, you save on lifecycle costs while improving crew safety through cleaner, automated unloading.
For owners and operators, this translates directly to higher utilisation, lower cost per voyage, and greater flexibility in charter operations.
Key features
GravityVibe™ integrates innovation with simplicity:
- Vibrating unloader modules break material bridges for continuous flow of coarse cargo.
- Isolated vibration design protects the hull and minimises transmitted noise.
- Low-slope cargo hold geometry increases usable volume and optimises stability.
- Self-optimising control automatically adjusts vibration frequency based on cargo behaviour.
- Simplified conveyor layout – one longitudinal conveyor – reduces components, and maintenance and minimize the risk of unplanned stoppages.
- Retrofit-ready modular system suitable for both newbuildings and conversions.
Interested to visit our test-rig in Nantong China
1/4
-
Lifecycle Support
From concept to operations, MacGregor supports you throughout your vessel’s lifecycle.
Our global service network provides engineering, installation supervision, and after-sales care – all aligned with your maintenance strategy.
Through OnWatch Scout digital services, you gain predictive insight into equipment condition and performance trends, ensuring maximum uptime and long-term reliability. -
Technical Features
- Patented vibrating panel system within cargo holds
- Vibration isolation frame to prevent hull stress
- Optimised material flow angles (15–20° vs. 35–60° in conventional systems)
- Integrated sensors for automatic frequency adjustment
- Simplified discharge line with single hold conveyor
- Modular layout for scalable vessel designs
-
Ship Types
GravityVibe™ is ideal for:
- Self-unloading bulk carriers (newbuild or conversion)
- Specialised bulk carriers
- Short-sea and coastal bulk vessels transporting mixed cargo grades
-
Solution Types
- Self-unloading gravity systems (enhanced)
- Retrofit upgrades for existing gravity systems
- Integration with hybrid unloading concepts and hoppers
Innovation in action
During our recent GravityVibe live demonstrations in Nantong, industry leaders saw firsthand how vibrating panels solve the operational challenges of discharging "difficult" materials like wood chips. By reducing friction and preventing bridging, GravityVibe ensures faster, more reliable self-unloading for a wide range of cargoes.
Watch the highlights from our Nantong test rig event to see the future of self-unloading technology.
GravityVibe in action: Real-world validation and system optimisation
Proven in Theory, Validated in Practice
Real-world test results confirm what simulations have already shown: significantly higher efficiency for self-unloaders when handling coarse materials.
GravityVibe unlocks more flexible and efficient bulk-cargo handling
GravityVibe™ system transforms traditional self-unloading by making it possible to discharge even coarse materials like wood chips at low slope angles, without sacrificing cargo space. With patent-pending vibration technology, it breaks through the limitations of conventional designs, boosts earning potential, and lowers emissions — all while simplifying maintenance and improving safety on board.