Described is a tugboat 1 for assisting a marine vessel 2 to manoeuvre. The tugboat 1 comprises a hull 11 having a perimeter P. The tugboat 1 also comprises a line handling system 10 comprising a line guide mechanism 100. The line guide mechanism 100 protrudes, or is positionable to protrude, away from the hull 11 for guiding a line 20 of the marine vessel 2 towards a predetermined region R of the perimeter P.

Described is a tugboat 1 for assisting a marine vessel 2 to manoeuvre. The tugboat 1 comprises a hull 11 having a perimeter P. The tugboat 1 also comprises a line handling system 10 comprising a line guide mechanism 100. The line guide mechanism 100 protrudes, or is positionable to protrude, away from the hull 11 for guiding a line 20 of the marine vessel 2 towards a predetermined region R of the perimeter P.

A remote-controlled, semi-autonomous or autonomous recovery apparatus includes a drive as well as a unit for launch and recovery of an autonomous underwater vehicle. The drive is dimensioned such that a large range, such as more than 5 nautical miles, is obtained.

A remote-controlled, semi-autonomous or autonomous recovery apparatus includes a drive as well as a unit for launch and recovery of an autonomous underwater vehicle. The drive is dimensioned such that a large range, such as more than 5 nautical miles, is obtained.

Towing winch system 1 for controlling a render and recovery of a towline during a towing operation. The towing winch system has a control unit 6 for controlling a drive 4 and a brake 5 for respectively driving and braking the winding drum. The drive 4 comprises a plurality of brushless alternating current motors 40 which each engages in one stage by a motor gear wheel 71 to a gear wheel 70 mounted to the winding drum 3. The brake 5 comprises a plurality of brake calipers 51 which each are engageable to a brake disc 50 mounted to the winding drum 3. The drivetrain of the plurality of brushless AC motors 40, one stage gear 7 and the plurality of brake calipers 51 form a powerful and robust structure to operate the towing winch system 1 under severe conditions which may occur in a towing operation.

Towing winch system 1 for controlling a render and recovery of a towline during a towing operation. The towing winch system has a control unit 6 for controlling a drive 4 and a brake 5 for respectively driving and braking the winding drum. The drive 4 comprises a plurality of brushless alternating current motors 40 which each engages in one stage by a motor gear wheel 71 to a gear wheel 70 mounted to the winding drum 3. The brake 5 comprises a plurality of brake calipers 51 which each are engageable to a brake disc 50 mounted to the winding drum 3. The drivetrain of the plurality of brushless AC motors 40, one stage gear 7 and the plurality of brake calipers 51 form a powerful and robust structure to operate the towing winch system 1 under severe conditions which may occur in a towing operation.

A submerged floating rail transit system comprises a first rope (102), a buoyancy tank (103), a rail (104), a gear (108), a driving mechanism, a cable (110) and a second rope (111); wherein one end of the first rope is anchored to the water ground (101), and the other end of the first rope is connected with the buoyancy tank; the rail is provided on the buoyancy tank, the gear is engaged with the toothed rail of the rail, and a driving mechanism is provided on the rail; the driving mechanism drives the gear to move along the extending direction of the rail; the driving mechanism comprises a shell (105), a first motor (106), a second motor (107) and a rotating shaft (109); one end of the second rope is connected with the shell, and the other end of the second rope is connected with a ship (113) on the water surface (112); the first motor and the second motor rotate in the same direction to drive the gear to rotate, thus generating traction force, so that the driving mechanism moves along the extending direction of the rail, and the driving mechanism pulls the ship to move through the second rope. The submerged floating rail transit system solves the problem of low efficiency of submerged transportation in the prior art and realizes efficient transportation on the water surface.

A submerged floating rail transit system comprises a first rope (102), a buoyancy tank (103), a rail (104), a gear (108), a driving mechanism, a cable (110) and a second rope (111); wherein one end of the first rope is anchored to the water ground (101), and the other end of the first rope is connected with the buoyancy tank; the rail is provided on the buoyancy tank, the gear is engaged with the toothed rail of the rail, and a driving mechanism is provided on the rail; the driving mechanism drives the gear to move along the extending direction of the rail; the driving mechanism comprises a shell (105), a first motor (106), a second motor (107) and a rotating shaft (109); one end of the second rope is connected with the shell, and the other end of the second rope is connected with a ship (113) on the water surface (112); the first motor and the second motor rotate in the same direction to drive the gear to rotate, thus generating traction force, so that the driving mechanism moves along the extending direction of the rail, and the driving mechanism pulls the ship to move through the second rope. The submerged floating rail transit system solves the problem of low efficiency of submerged transportation in the prior art and realizes efficient transportation on the water surface.

The invention relates to a water-going assembly comprising a first buoyant structure (S1) comprising at least two hulls (F1, F1′; F11, F11′, F12, F12′) delimiting between them a space (E1) and a photovoltaic arrangement (PH1) occupying a substantial proportion of the footprint of the buoyant structure, and a second buoyant structure (S2) provided with an electric thruster (P2) and with a battery (B2), means for assembling the two buoyant structures detachably, with means of electrical connection between the photovoltaic arrangement of the first buoyant structure and the battery of the second buoyant structure, the latter being able to be used for moving the two structures (S1, S2) with a directional guidance, or as an autonomous motorized marine craft.

The invention relates to a water-going assembly comprising a first buoyant structure (S1) comprising at least two hulls (F1, F1′; F11, F11′, F12, F12′) delimiting between them a space (E1) and a photovoltaic arrangement (PH1) occupying a substantial proportion of the footprint of the buoyant structure, and a second buoyant structure (S2) provided with an electric thruster (P2) and with a battery (B2), means for assembling the two buoyant structures detachably, with means of electrical connection between the photovoltaic arrangement of the first buoyant structure and the battery of the second buoyant structure, the latter being able to be used for moving the two structures (S1, S2) with a directional guidance, or as an autonomous motorized marine craft.