PRODUCT SOLUTION
NASCA – Operation Monitoring System
To reduce greenhouse gas (GHG) emissions and fuel consumption in actual vessel operations intensify, the need for real-time monitoring of operational data is growing. At the same time, improvements in maritime communication infrastructure are accelerating the adoption of monitoring systems.
NASCA (Nakashima Ship Cruise Assist System) enables real-time monitoring of key data such as vessel speed, shaft power, fuel consumption, and propeller efficiency. Looking ahead, we plan to expand NASCA’s capabilities through integration with Oceanus—Fluid Techno’s system for estimating encountered ocean conditions and wave environments. This will allow monitoring of additional safety and performance indicators, such as the transverse metacentric height (GM), which reflects a vessel's dynamic stability.
NASCA System Configuration
NASCA (Nakashima Ship Cruise Assist System)
NASCA (Nakashima Ship Cruise Assist System) features high-precision shaft power meters developed by Shoyo Engineering, paired with a simple and user-friendly interface application. Under a suitable communication environment, operational data can be easily accessed and monitored via smartphones, tablets, or similar devices.
Shaft Power Meter
Shoyo Engineering Co., Ltd. (Ayase City, Kanagawa Prefecture)
A shaft power meter is an instrument used to measure the transmitted horsepower from the main engine to the propeller by detecting the torsion (twist) of the rotating shaft.
When the shaft twists, it causes changes in the tension of a metallic membrane inside the sensors installed between the detection rings. This change is then converted into torsional displacement, from which torque is calculated.
By installing a shaft power meter, vessel operators can monitor the operating status of the main engine and overall propulsion system with high accuracy based on actual horsepower.
This contributes to improved vessel safety and supports the planning of optimal voyage schedules using accurate power-based performance data.
Oceanus – Estimated Sea State System
Fluid Techno Co., Ltd. (Sasebo City, Nagasaki Prefecture)
Modern vessels collect a variety of real-time operational data that can be used for safe and economical route selection, as well as environmental impact assessment.
Oceanus estimates the encountered sea state—including wave height, period, and direction— by analyzing the real-time motion of the vessel during operation.
