WP 9600 [DST]

The system warns if the planned trajectory leads to a collision. In case of disconnections or ignoring of collision warnings, suitable maneuvers are to prevent a collision and to bring the vessel to a safe state. If a collision or an average can no longer be prevented, a strategy is needed to minimize the damage and then to establish a condition with low consequential risk. To implement such an emergency functionality, the developed lane assistant can be further developed to calculate a new lane in case of emergency, for which a collision risk can be excluded and which, for example, guides the ship laterally out of the shipping channel and stops it. A bridge approach system is not necessary: All sensors (mainly cameras) are placed in such a way that the bridge house does not need to be raised.

Consequently, the ship would continue in regular operation without any noticeable signs of a malfunction.

If a collision can no longer be prevented by adjusting the trajectory, a suitable emergency maneuver must be performed. This can be, for example, an emergency stop, avoidance or turn-up maneuver. In this work package, mathematical models for predicting the trajectory during emergency maneuvers are parameterized. An implementation of the mathematical models and parameterizations into the emergency system will allow the selection of an appropriate collision-preventing maneuver based on an assessment of the situation, and can thus bring the ship to a safe state. Since there is also the possibility that a collision cannot be prevented despite emergency maneuvers, emergency routines are also developed for this case.

The AP 9600 “Collision Warning Systems and Emergency Functionalities” aims, among other things, to detect non-typical maneuvers due to system errors, detected rule violations as well as generally different anomalies, to act accordingly or, if necessary, or in a weakened form, to warn the skipper of a hazardous situation. For this purpose, maneuvers/control commands are provided to bring the ship into a safe condition or to minimize the resulting risky behavior. This is essentially done initially by displaying/integrating relevant information into the interfaces in visual and/or audible form. In doing so, it can rely on the results of AP5700 (workflow management), which provides the risk assessment through continuous analysis; while at the same time, other APs are of central importance, e.g., regarding communication monitoring, the technical feasibility of maneuvers, regarding the prediction of the course of the own ship, the other ships and their options for action, the situation detection by means of digital maps.

The contribution continues the workflow management (AP 5700) for emergency situations, e.g. generating control commands that have to be implemented in the ship. Corresponding algorithms and controls must be remotely controllable (AP2100), or automatically integrated in the ship as behavior routines and thus only executable by ship-internal sensors, cf. ERDF project.

The detection of system-internal errors is important for emergency management.