VOLVO PENTA CORPORATION

A steering assist system for a marine vessel has a steering control unit for receiving an operator steering command via a steering device. The steering control unit is configured to provide feedback to an operator via the steering device in response to a control signal and a positioning system configured to determine a location of the marine vessel. The system has a processing circuitry to store sea-chart data indicating one or more hazardous location areas. The system is configured to determine whether the location of the marine vessel in relation to the one or more hazardous location areas satisfies a predetermined hazard criterion, and in accordance with a determination that the hazard criterion is satisfied, transmit a control signal to the steering control unit. The steering control unit is, upon receipt of the control signal, configured to provide feedback to an operator via the steering device.

A computer system has processing circuitry to obtain environment data and monitor a snap-in docking distance in relation to a fixed structure based on the environment data; in response to the marine vessel being outside the distance: control movement of the marine vessel based on a maneuvering request and/or the environment data; and in response to the marine vessel being within the distance: control the marine vessel to move into physical engagement with the fixed structure; obtain force sensing data indicating an engagement pressure between the marine vessel and the fixed structure; and regulate a thrust force in a direction towards said the fixed structure based on said force sensing data to control a desired engagement pressure.

A power system provides multiple output voltage levels. The power system has at least one battery pack and a direct current to direct current converter. The first voltage level is the DC/DC converter output voltage level, the second voltage level is the battery pack output voltage level, and the third voltage level is a sum of the battery pack output voltage and DC/DC converter output voltage.

A marine drive system and method for marine vessel stabilization is provided. The marine drive system has at least one electric drive unit arranged to generate a thrust power for propulsion of the marine vessel, at least one trim actuator arranged to control the thrust elevation angle of the at least one electric drive unit, and a control unit arranged to adjust the thrust power of the at least one electric drive unit and the thrust elevation angle of the at least one trim actuator in order to obtain desired stabilizing pitch and roll movements of the marine vessel, wherein the control unit is connected to a steering control device of the marine vessel. The control unit is arranged to generate a force feedback by the steering control device based on the applied adjustments of the thrust power and the thrust elevation angle.

A computer implemented diagnostics system for a marine propeller drive unit is provided. The diagnostics system comprising processing circuitry connected to a speed sensor system and to a control unit associated with the electric machine. The speed sensor system is arranged in connection to the differential arrangement to provide propeller speed data to the processing circuitry indicative of a speed of rotation of at least one of the propeller axles of the self-balancing propeller drive unit. The control unit is arranged to provide motor current data to the processing circuitry indicative of a motor current drawn by the electric machine. The processing circuitry is arranged to monitor the motor current data from the control unit, and the propeller speed data from the speed sensor system, and to classify a state of the self-balancing propeller drive unit into a pre-determined number of states comprising one or more fault states, based on the motor current data and on the propeller speed data. The processing circuitry is arranged to trigger an action by the diagnostics system in case the state of the self-balancing propeller drive unit is classified as a fault state.

A drive system for a marine vessel has a first housing fixed to an opening in a hull of the marine vessel, and a drive unit arranged inside the first housing. The drive unit is provided with a second housing including an electric or combustion drive motor and a marine propulsion system attached to the second housing. The drive system is provided with a parking position in which the marine propulsion system is positioned inside the first housing, and a drive position in which the marine propulsion system is positioned outside of the first housing, where the drive system is provided with an interceptor comprising an interceptor blade arranged in the first housing.

The invention relates to a propeller arrangement in a cathodic protection system for a marine vessel with a marine propulsion system, which cathodic protection system comprises a direct current power source with a positive terminal. The propulsion system comprises at least one driveline housing at least partially submerged in water; a torque transmitting drive shaft extending out of the driveline housing; and at least one propeller mounted on the drive shaft. According to the invention, the at least one propeller is electrically isolated from its drive shaft. Each electrically isolated propeller is electrically connected to a slip ring connector, which slip ring connector is in electrical connection with the positive terminal. The invention further relates to a vessel provided with such a propeller arrangement.

A computer system for assessing a power system component has processing circuitry to receive time series data from a sensor monitoring the power system component; preprocess said time series data; extract a plurality of features from the preprocessed time series data; employ a statistical testing method to said plurality of features to determine respective statistical significance of said features; feed one or more of said features having a statistical significance above a predetermined limit value into a machine learning model; quantifying contributions of predicted outputs from the machine learning model; and repeating the extracting, employing, feeding and quantifying until criteria is met to obtain an assessment of said power system component.

A stop system for a high power system is arranged in a Hazardous Voltage Interlock Loop, HVIL, passing through at least a part of the high power system. The stop system is configured to trigger disconnection of at least part of the high power system based on a condition of a HVIL low power signal transmitted through the HVIL.

A method for determining information indicative of a position of a translational movement sensor on a marine vessel is provided. The marine vessel extends in a longitudinal direction along a marine vessel longitudinal axis, the longitudinal direction preferably corresponds to an intended direction of travel of the marine vessel. The marine vessel extends in a vertical direction along a marine vessel vertical axis and in a transversal direction along a marine vessel transversal axis. The transversal axis is perpendicular to each one of the longitudinal axis and the vertical axis.