Stability is not static. It is a constantly changing condition.
RollSense is the modern motion reporting and stability analysis system. It reports roll, pitch and yaw in real time on the ship and in near real time to shoreside stakeholders, and supports post-voyage stability analysis.
Rare Events. Irreversible Consequences.
Capsize events are rare, but the consequences can be severe:
Total loss of vessel and cargo
Extreme risk to crew
Environmental damage
Staggering salvage / recovery costs
Long-term operational, legal, and reputational impact
Traditional approaches rely heavily on assumed conditions. RollSense is designed for the real world where assumptions diverge from reality.
The Limitation of Assumption-Based Stability
Most stability tools depend on inputs that are fixed, estimated, or entered prior to departure. In practice, vessel stability evolves continuously due to many variables.
The challenge is not measuring motion. It is understanding what that motion says about the vessel's stability.
Introducing RollSense
RollSense works alongside existing stability calculators with scientifically measured data.
Using a compact onboard processor and rugged mobile interface, RollSense continuously observes vessel motion and applies a patented algorithm to deliver, both on ship (real time) and off ship (near real time):
- Roll, pitch and yaw
- Motion Severity Index
In the post-voyage report, or on request, RollSense provides estimates of the following, derived from actual motion:
Dynamic Metacentric Height (dGM)
Measured Roll Period
Wave Encounter Period (WEP)
These estimates can be used to generate a stability curve, plotting righting arm (GZ) against roll amplitude, to give operators and stakeholders a post-voyage view of the vessel’s stability.
Visibility
Beyond the Bridge.
Motion data can be viewed onboard and shared with shore-based stakeholders, including:
Vessel owners and operators
Cargo owners
Insurers
Regulators and classification societies
Near-real-time sharing is available for roll, pitch and yaw, and the Motion Severity Index. Post-voyage reporting is available for all stability-related analysis.
Built for Large Commercial Vessels
After five years of live trials covering approximately 1,000 underway days, RollSense is currently pursuing a test event to monitor vessel motion on 10+ ships simultaneously. The system is designed to integrate smoothly into existing maritime operations.