VTT Technical Research Center of Finland said it is developing steering for the remote-monitored and controlled autonomous ships of the future. The new technology has been developed for navigation systems and ship autopilots, which steer ships automatically.
“VTT has deep knowledge of autonomous ship research concerning especially reliability and safety topics. Such special expertise has now led to the development of navigation systems for autonomous ships,” says Jussi Martio, a Senior Scientist at VTT. This requires an autopilot, which is used to control a moving vessel, including during evasive manoeuvres according to COLREGs (International Regulations for Preventing Collisions at Sea).
VTT maintains the stance that while ships of the future will largely be controlled by artificial intelligence, they must be monitored and controlled on demand by land-based professionals, setting new challenges also for autonomous ship navigation systems
The Apilot autopilot under development by VTT has three modes: track, heading and slow joystick control e.g. for docking situations.
In the ‘track mode,’ Apilot steers the ship along a previously agreed route. If the ship detects another vessel, which must be avoided, the autopilot switches to ‘heading mode.' This enables Apilot to avoid the other vessel with a small change in the ship’s heading. Autopilot returns to track mode after the other vessel has been avoided.
In the ‘joystick mode,' control and propulsion equipment
are adjusted to low speeds maneuverings. Apilot puts the ship into the desired operating mode, for example to maneuver sideways into a dock.
In all situations, the autopilot ensures that the ship remains within a set distance from the planned route. If the limits in question are exceeded, the autopilot gives a warning and remote control must be taken of the ship.