Abstract: A drive unit for a marine vessel has a drive unit body with a first part and a second part. The first part of the drive unit body is arranged elongated along a center plane of the drive unit and supports a propeller shaft on a lower end, where the center plane is vertical and extends in a longitudinal direction of the marine vessel in use. The second part of the drive unit body is attached to the first part at an upper end of the first part and extends along a hull plane perpendicular to the center plane and extending in a lateral direction of the marine vessel in use. The drive unit body has a closed cooling compartment fluidly connected to a closed cooling circuit configurable to cool one or more electric components of the marine vessel. The closed cooling compartment has an extension parallel to the hull plane in the second part which exceeds the extension parallel to the hull plane in the first part.

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 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.