Abstract: A propulsion unit for a marine vessel is adapted to receive power from at least one power supply unit. The propulsion unit includes a stationary part adapted to be mounted to a hull of the marine vessel, and a movable part comprising one or more thrust generating devices adapted to transform the received power into a thrust by acting on water carrying the marine vessel. The propulsion unit is adapted to receive exhaust gases from at least two internal combustion engines, wherein the movable part is adapted to release the exhaust gases into the water.

Abstract: A drive system for a marine vessel including 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 comprising 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, a drive position in which the marine propulsion system is positioned outside of the first housing and an intermediate position in which the marine propulsion system is positioned between the parking position and the drive position.

Abstract: A method for predicting urea crystal build-up in an engine system when operating according to an intended drive cycle.

Abstract: A method for predicting soot build-up in an engine system when operating according to an intended drive cycle. The engine system includes an internal combustion engine and an exhaust gas aftertreatment system provided with a particulate filter.

Abstract: A propeller drive arrangement includes a propeller shaft, a planetary gear comprising a first planetary gear member, a second planetary gear member and a third planetary gear member which are drivingly connected, and an outer shaft arranged coaxially with and radially outside of the propeller shaft. The outer shaft is drivingly connected to one or more propeller blades for varying the pitch angle, and the propeller shaft is drivingly fixed to one of the planetary gear members and another one of the planetary gear members is arranged to drive the outer shaft by a driving torque exerted on the propeller shaft.

Abstract: A propeller drive arrangement includes a propeller shaft, a planetary gear comprising a first planetary gear member, a second planetary gear member and a third planetary gear member, an outer shaft arranged coaxially with and radially outside of the propeller shaft, A gear wheel set drivingly connecting the second planetary gear member with the outer shaft, The outer shaft is drivingly connected to the one or more propeller blades for varying the pitch angle. The propeller shaft is drivingly fixed to the first planetary gear member, and the second planetary gear member drives the outer shaft via the gear wheel set by a driving torque exerted on the propeller shaft.

Abstract: A method and a system for cancelling stray currents in a marine electrical supply system, which system comprises a protective earth circuit connecting a vessel to ground when a source of power is connected to the vessel is described. The method involves the steps of monitoring the current in the protective earth circuit using a current sensor; determining if a stray current is detected by the current sensor, and, if a stray current is detected, counteracting the stray current in the protective earth circuit to reduce the stray current to a value at or near zero current.

Abstract: A propulsion drive assembly for a marine vessel is described. The propulsion drive assembly includes a propeller drive unit for carrying and driving at least one propeller, a housing for connection to a hull of the marine vessel, a suspension mechanism attached to the housing and configured to suspend the propeller drive unit, wherein the suspension mechanism is movable along a first longitudinal axis of the housing between a stowed position, in which the propeller drive unit is positioned inside the inner space of the housing, and a deployed position in which at least a portion of the propeller drive unit protrudes outside the housing through the first opening, and a gas supply device configured to supply gas into the inner space of the housing, the gas supply device comprising a gas pump or a controllable valve connectable to a source of pressurized gas.

Abstract: A set of parts for marine vessel propulsion assemblies is provided A propulsion unit includes a driveshaft, and a first connection module comprising one or more input shafts, wherein the propulsion unit and the first connection module may form at least a portion of a first propulsion assembly. A second connection module comprising one or more input shafts, wherein the propulsion unit and the second connection module may form at least a portion of a second propulsion assembly. The positions, in relation to the propulsion unit, of output shafts of the first and second connection modules, when the first and second connection modules are mounted to the propulsion unit, are the same.

Abstract: The present disclosure generally relates to a joystick device (100) operable to provide speed, direction and steering commands for controlling a marine vessel (300). The present disclosure also relates to a marine propulsion control system controlling a set of propulsion units (308, 310, 312 and 314) carried by a hull of a marine vessel (300), wherein the marine propulsion control system is adapted to receive an input command from such a joystick device (100).

Abstract: A method for checking the oil level in a marine drive unit, where the drive unit is provided with an external oil filter, an oil level sensor adapted to determine an oil level in the drive unit, and an electronically controlled tilt means, comprising the steps of, initiating an oil level check, controlling the tilt means to tilt the drive unit to a plurality of different tilt angle positions, for each tilt angle position, determining if the oil level sensor detects the oil level in the drive unit, for each tilt angle position, registering the tilt angle of the drive unit and the signal from the oil level sensor, determining at which tilt angles the sensor detects the oil level, and in dependence of the determined tilt angle of the drive unit, determining if the oil level of the drive unit is within a predefined range.

Abstract: The invention relates to a method to heat exhaust gases to a selected specific temperature by fuel injection control in an internal combustion engine (112), which engine comprises a control unit (115) registering the currently requested load and determining a required fuel amount in response to the requested load.

Abstract: A control unit for controlling a marine vessel to avoid an emergency situation, the control unit comprising processing circuitry and a storage medium, wherein the control unit is configured to receive path data from one or more sensor devices indicative of a path traveled by the marine vessel in a forward direction and to store the received path data by the storage medium, characterized in that the control unit is configured to receive a trigger signal from an input device, and, in response to the trigger signal, determine a location for turning the vessel around, navigating to the location, turning the vessel around at the location, and navigating the vessel along the path in reverse direction.

Abstract: A control handle for controlling an electric drive system of a sailboat is provided. The control handle comprises a handle and a handle shaft, where the control handle is provided with a plurality of engagement positions. A first engagement position is adapted to engage a forward drive mode of the electric drive system, a second engagement position is adapted to engage a reverse drive mode of the electric drive system, a third engagement position is adapted to engage an idle drive mode of the electric drive system, and a fourth engagement position is adapted to engage a hydro energy generation mode of the electric drive system.

Abstract: A tiller for controlling a rudder of a sailboat comprising a handle arranged to be controlled by one hand. The handle is provided with a plurality of engagement positions, where a first engagement position is adapted to engage a forward drive mode of an electric drive system, a second engagement position is adapted to engage a reverse drive mode of the electric drive system, a third engagement position is adapted to engage an idle drive mode of the electric drive system, and a fourth engagement position is adapted to engage a hydro energy generation mode of the electric drive system.

Abstract: The embodiments herein relate to amounting arrangement (100) for a propulsion unit. The mounting arrangement (100) comprises an attachment arrangement (133) adapted to attach said mounting arrangement (100) to a marine vessel. The mounting arrangement (100) comprises a propulsion unit carrying arrangement (110) adapted to be rigidly connectable to said propulsion unit. The propulsion unit carrying arrangement (110) is pivotably mounted to said attachment arrangement (133). The embodiments further relate to a marine propulsion system (200) comprising a propulsion unit (210) and the mounting arrangement (100). The propulsion unit (210) is rigidly connected to the propulsion unit carrying arrangement (100). An output shaft of the propulsion unit (210) is drivingly connectable to a shaft of a propeller drive (220). The marine propulsion system is pivotably mountable to a marine vessel.

Abstract: The invention relates to a hydrofoil system for a marine vessel comprising a hull (101), the hydrofoil system comprising at least one pair of foldable hydrofoils (109, 110) which are pivoted relative to the marine vessel, wherein each hydrofoil (109, 110) is controllable by at least one actuator (930) for displacement of the at least one pair of foldable hydrofoils in a lateral direction of the marine vessel between a stowed position and a deployed position. Each foldable hydrofoil (109, 110) is hinged relative to the hull above the water line on opposite sides of the marine vessel. A first portion (111) of each hydrofoil extends adjacent the hull (101) towards the water line of the marine vessel when the hydrofoil is in the stowed position and a second portion (112) comprises a free second end extending under the hull. The second portion (112) is submerged and arranged in a lateral recess (107) behind a stepped hull portion (106) of the marine vessel when the hydrofoil is in the stowed position.

Abstract: A powertrain for a marine vessel, comprising an internal combustion engine, a transmission, a first drive unit having a first propeller and a second drive unit having a second propeller, a first electric motor and a second electric motor, where the internal combustion engine is drivingly connected to the first drive unit and the second drive unit through the transmission, that the first electric motor is drivingly connected directly to the first drive unit and that the second electric motor is drivingly connected directly to the second drive unit.

Abstract: A marine drive unit for a boat includes a cooling compartment arranged in a drive unit body. The cooling compartment forms part of a closed cooling circuit, where the cooling circuit is arranged to cool propulsion components of the boat, where the cooling compartment comprises an inlet opening, an inlet channel, a lower end, an outlet channel and an outlet opening, where the inlet channel forms a first flow path for a cooling fluid from the inlet opening to the lower end of the cooling compartment. The outlet channel forms a second flow path for the cooling fluid from the lower end of the cooling compartment to the outlet opening, thereby allowing heat from the cooling fluid to dissipate through the outer wall of the drive unit.

Abstract: A drive arrangement for a marine vessel. The drive arrangement includes an outboard drive unit provided with at least one propeller, wherein the outboard drive unit is configured to be arranged on an outside of a transom of the marine vessel and to be connected via an opening in the transom to further parts of the drive arrangement arranged inside the marine vessel; and a supporting carrier configured to be arranged at the opening in the transom for fastening and support of the outboard drive unit so as to take up thrust and steering forces from the outboard drive unit when the drive arrangement is installed and used for propelling the marine vessel. The drive arrangement includes a supporting frame structure configured to be fixed to a supporting hull structure arranged on an inside of the marine vessel forward of the transom. The supporting frame structure extends aft-wards from or along the supporting hull structure to the opening in the transom.