A real-time sail planning system

The EONav service (earth observation for maritime navigation) consists of a sail plan that guides ships how to efficiently sail from one port to the next. The system contains unique observational capabilities and computational models based on spaceborne data to calculate the route for the ships to follow. This in turn results in a safer and more economical execution of maritime and offshore operations.

Applications in Energy Supply

for efficient transport and assent management

Applications in Passenger Transport

for improved comfort and efficiency

Applications in Cargo Transport

for improved transport efficiency

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Fuel and emission reduction

Fuel prices for maritime transport are now from 20% up to 60% of total operational vessel costs in yearly averages, but with very significant and unpredictable variations that can cause severe financial impacts to the industry. EONav is achieving a significant fuel reduction in the operation of a ship due to the improved and accurate sail plans that are updated in real time. In effect, a virtual ship-specific IT centre continuously calculates the optimal sail heading and speed for each ship, based on the most up-to-date Earth observation data and numerous numerical models.
Similarly, the emission of CO2 and other pollutants (such as sulphur dioxides, nitrogen oxides and fine particulate matter) can be reduced, resulting in less pollution along major trade routes and coastal areas. In particular, it allows the ship operator to become aware of the actual ship pollution and thereby provides means to comply with environmental regulations at any given geographical location.

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Optimized sailing time

EONav makes it possible to optimize the sail plan according to operational requirements, such as port slot times, channel passing slots (Suez or Panama channel) and tide schedules (for instance, a VLCC needs high tide to enter and leave the port of Rotterdam).
Traditionally, sea masters give a 10% time margin over the journey to ensure a timely arrival at their destination due to various risks, in particular uncertainty in the weather forecasts and sea state conditions. This causes large overheads as typically the ship operates at very low speed during the last hours of a journey. With a more accurate sail plan based on real-time weather and sea state observations, time margins can be greatly reduced.

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Asset preservation and maintenance

The life expectancy of a commercial ship depends to a large extent on the stress the ship (and especially the hull of the ship) is experiencing at sea. Commercial ships are designed for a life expectancy of around 30 years. This can only be achieved with extensive maintenance of the hull according to the stress it encounters. Due to the fact that it is unknown today what the actual encountered stress of the ship is, maintenance cycles are based on regular intervals disregarding the actual need for maintenance. This can lead to serious safety issues. On the other hand, with the appropriate observational data and fatigue models, maintenance cycles can be significantly optimized to an 'as needed basis'. Furthermore, an explicit reduction of the exposure to heavy sea can significantly extend the life expectancy of the ship asset.

Passenger and crew comfort

Sail plans can be optimized to avoid irregular waves and thereby unpleasant journeys for passengers (and crew). This especially holds for cruise ships, where passenger comfort, well-being and safety are important.
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24/7 and in all-weather conditions

Offoshore Navigation Ltd. develops innovative route planning services based on the EONav system.
The EONav technology fuses ship-specific parameters such as yaw, pitch, roll, sailing speed, GPS position, structural stress, engine parameters, drift, loading condition, wetness, etc. with real-time weather and sea state observations.
Observations are acquired through several Earth observation platforms and include information about waves, winds, currents, sea ice concentration and drift. By combining observations from multiple sensors, weaknesses of one particular sensor are compensated for by the characteristics of another. The sensor suite is chosen such that the sensors’ capabilities partly overlap and complement each other. This makes EONav an all-weather, 24/7 surveillance and route plan system.
All these observations, parameters and boundary conditions are integrated to generate an optimal route plan that assists the master in selecting the optimal route and speed pattern to the next port.
The end-result is significantly better than if you rely your route planning on weather forecast models only!

Why EONav?

The maritime industry seeks to optimize route plans for fuel reduction, vessel emission reduction and/or reduction in sailing time in an efficient manner. However, they do not have sufficient means to visualize the observations needed to develop such an optimized route plan. Nor do they have continuous observational updates with sufficient accuracy or numerical modelling capabilities.

EONav combines information obtained from various (spaceborne, seaborne and coastal) sensor systems and weather forecast data into advanced numerical models to calculate the optimum route plan for any vessel — continuously and in real-time.

Optimized route plans are communicated to the vessels for multiple benefits (depending on the chosen optimization criteria), for instance to save fuel, reduce pollution, limit structural fatigue or to improve passenger and crew comfort.