According to an embodiment of the present disclosure, a vessel includes: a hull 100 provided with a propellant 140; a deck 200 spaced apart from the hull 100; and a support 300 between the hull 100 and the deck 200, the support 300 configured to support 300 the deck 200 with respect to the hull 100, wherein the hull 100 is disposed below a water surface during operation, and the deck 200 is supported by the support 300 to be disposed above the water surface during operation.

According to an embodiment of the present disclosure, a vessel includes: a hull 100 provided with a propellant 140; a deck 200 spaced apart from the hull 100; and a support 300 between the hull 100 and the deck 200, the support 300 configured to support 300 the deck 200 with respect to the hull 100, wherein the hull 100 is disposed below a water surface during operation, and the deck 200 is supported by the support 300 to be disposed above the water surface during operation.

An air supply apparatus for a ship is described. The air supply apparatus includes a first turbocharger having a first compressor and a first turbine being drivable by exhaust gas provided from one or more engines. The first compressor is coupled to the first turbine via a transmission configured for changing a speed of the first compressor. Additionally, the air supply apparatus includes an air lubrication device for resistance reduction of the ship. The first compressor is connected with the air lubrication device for supplying air to the air lubrication device.

An air supply apparatus for a ship is described. The air supply apparatus includes a first turbocharger having a first compressor and a first turbine being drivable by exhaust gas provided from one or more engines. The first compressor is coupled to the first turbine via a transmission configured for changing a speed of the first compressor. Additionally, the air supply apparatus includes an air lubrication device for resistance reduction of the ship. The first compressor is connected with the air lubrication device for supplying air to the air lubrication device.

A belt for reducing the drag of a hull of a floating vessel, whereby the belt includes a belt body extending in a length direction (L), whereby the belt has, a sequence of bubble generators which are embedded in the belt body, whereby the belt has an air channel for supplying pressurized air to the bubble generators, whereby the air channel extends in the length direction (L), whereby the bubble generators are connected to the air channel, whereby the belt body is made of a flexible material. Also disclosed is a device having such a belt and a method of reducing the drag of a hull of a floating vessel using such a belt.

A belt for reducing the drag of a hull of a floating vessel, whereby the belt includes a belt body extending in a length direction (L), whereby the belt has, a sequence of bubble generators which are embedded in the belt body, whereby the belt has an air channel for supplying pressurized air to the bubble generators, whereby the air channel extends in the length direction (L), whereby the bubble generators are connected to the air channel, whereby the belt body is made of a flexible material. Also disclosed is a device having such a belt and a method of reducing the drag of a hull of a floating vessel using such a belt.

An assembly in a marine vessel includes a unit arranged in a water tight chamber opening in a hull of a vessel, wherein the unit is adapted to extend into the water below the vessel when at a mounted position. A connection path between an inside and an outside of the vessel is provided with a sealing system and the sealing system divides the connection path into an outside connection path portion and an inside connection path portion. The assembly includes a gas inlet system opening to the outside connection path portion.

An assembly in a marine vessel includes a unit arranged in a water tight chamber opening in a hull of a vessel, wherein the unit is adapted to extend into the water below the vessel when at a mounted position. A connection path between an inside and an outside of the vessel is provided with a sealing system and the sealing system divides the connection path into an outside connection path portion and an inside connection path portion. The assembly includes a gas inlet system opening to the outside connection path portion.

A flat-bottomed vessel for transporting persons or goods, the vessel including a drag reduction system attached to the bottom of the vessel. The drag reduction system includes: two or more turbulence members extending perpendicular to the longitudinal direction of the vessel for generating an area with turbulent flow downstream to the turbulence members at the bottom of the vessel during movement. Additionally, for each turbulence member an air injector can be used to inject an air flow at or near to the turbulence members.

A flat-bottomed vessel for transporting persons or goods, the vessel including a drag reduction system attached to the bottom of the vessel. The drag reduction system includes: two or more turbulence members extending perpendicular to the longitudinal direction of the vessel for generating an area with turbulent flow downstream to the turbulence members at the bottom of the vessel during movement. Additionally, for each turbulence member an air injector can be used to inject an air flow at or near to the turbulence members.