Autonomous motorised monohull ship with weighted keel transformable into a trimaran

Abstract

Disclosed is a motorised wave-piercing ship with hull with a deck, the ship including a conning tower and, under the hull, a weighted keel, the keel being removable and being able to be placed in a low position and a high or extracted position. According to the invention, the ship can sail as a monohull or as a trimaran, the hull including a device for removable attachment of an anti-roll stabilisation system including an elongated connection arm terminated at its two lateral ends by two floats, the connection arm including an attachment member, the attachment member being configured to be removably attached on the attachment device in order to transform the ship into a trimaran, and the ship is monohull in the absence of the anti-roll stabilisation system.

1 . A motorized, wave-piercing, autonomous surface ship with a tapered hull, the hull having a deck, the ship having a wheelhouse erected on said deck, the ship further including, under the hull, a ballasted keel intended to lower the ship's centre of gravity to stabilise the ship at least with respect to the roll, wherein the keel is removable and able be placed in several positions including a lower position, in which the ship's centre of gravity is lowered, and an upper or extracted position, in which the ship's centre of gravity is raised, and the ship can sail as a monohull or as a trimaran, the hull including a device for removable attachment of an anti-roll stabilisation system intended to counter at least the roll, the anti-roll stabilisation system including an elongated connection arm terminated at its two lateral ends by two floats, the connection arm including an attachment member, the attachment member being configured to be removably attached on the attachment device in order to transform the ship into a trimaran OK the two floats being arranged on the port and starboard sides of the hull respectively, and wherein the ship is a monohull in the absence of the anti-roll stabilisation system, the connection arm being configured to pass above the hull, on the deck, wherein the removable attachment device of the hull and the attachment member of the connection arm of the anti-roll stabilisation system are each made of two portions, a front portion and a rear portion, and for a connection arm passing above the hull and by the rear of the ship, the anti-roll stabilisation system includes, at the front of the connection arm, a pin designed to fit into the lifting chain plate of the ship, positioned on the deck at the rear of the wheelhouse, the lifting chain plate and the pin forming a respective front portion of the two-portion attachment device and attachment member, and the attachment device includes a straight tail, positioned at the rear of the lifting chain plate, and the attachment member includes an elongated groove positioned on the lower side of the connection arm of the anti-roll stabilisation system, the groove being widen towards the front of the connection arm and narrowed towards the rear of the connection arm, the straight tail and the groove forming a respective rear portion of the two-portion attachment device and attachment member. 
     
     
         2 . The ship according to  claim 1 , wherein the attachment member of the connection arm is median and is arranged along the arm at substantially equal distance from the two floats. 
     
     
         3 . The ship according to  claim 1 , wherein the removable ballasted keel is translatable and may be lowered down under the hull, to the keel lower position, and be lifted up at least partly into a keel storage space of the wheelhouse, to the keel upper position. 
     
     
         4 . The ship according to  claim 1 , wherein the anti-roll stabilisation system includes an electric power source and the floats include electric propulsion sets. 
     
     
         5 . The ship according to  claim 4 , wherein the removable attachment device and the attachment member include electrical connectors that allow the transmission of at least electrical power between the ship and the anti-roll stabilisation system. 
     
     
         6 . The ship according to  claim 1 , wherein the anti-roll stabilisation system includes one or several of the following devices: radio control device enabling the anti-roll stabilisation system to be directly radio-controlled, an automatism enabling the anti-roll stabilisation system to directly perform missions in autonomy, at least one sensor allowing in particular measurements, underwater communications, positioning, navigation, obstacle perception. 
     
     
         7 . An anti-roll stabilisation system intended to transform a monohull surface ship into a trimaran, wherein the anti-roll stabilization system is removable and includes an elongated connection arm terminated at its two lateral ends by two floats, the connection arm including an attachment member, the attachment member being configured to be removably attached on an attachment device of the monohull surface ship in order to transform the monohull surface ship into a trimaran, the anti-roll stabilisation system being able to float and being stable with the two floats in water, and being able to sail by moving on its own, the floats having propulsion sets. 
     
     
         8 . The anti-roll stabilisation system according to  claim 7 , wherein the anti-roll stabilization system is remote controlled. 
     
     
         9 . The anti-roll stabilisation system according to  claim 7 , further comprising an automatism enabling the anti-roll stabilisation system to directly perform missions in autonomy. 
     
     
         10 . The anti-roll stabilisation system according to  claim 7 , further comprising at least one sensor allowing in particular measurements, underwater communications, positioning, navigation, obstacle perception. 
     
     
         11 . The anti-roll stabilisation system according to  claim 10 , wherein the monohull surface ship intended to receive the anti-roll stabilisation system includes a wheelhouse erected on a deck of the ship's hull and the connection arm of the anti-roll stabilisation system, which is intended to pass above the ship's hull by coming against the deck of said ship, includes a notch intended to receive one of the front or rear ends of the wheelhouse, the notch edges being intended to come against one of the two front or rear ends of the wheelhouse. 
     
     
         12 . The ship according to  claim 2 , wherein the anti-roll stabilisation system includes an electric power source and the floats include electric propulsion sets. 
     
     
         13 . The ship according to  claim 12 , wherein the removable attachment device and the attachment member include electrical connectors that allow the transmission of at least electrical power between the ship and the anti-roll stabilisation system. 
     
     
         14 . The ship according to  claim 4 , wherein the anti-roll stabilisation system includes one or several of the following devices: radio control device enabling the anti-roll stabilisation system to be directly radio-controlled, an automatism enabling the anti-roll stabilisation system to directly perform missions in autonomy, at least one sensor allowing in particular measurements, underwater communications, positioning, navigation, obstacle perception. 
     
     
         15 . The ship according to  claim 5 , wherein the anti-roll stabilisation system includes one or several of the following devices: radio control device enabling the anti-roll stabilisation system to be directly radio-controlled, an automatism enabling the anti-roll stabilisation system to directly perform missions in autonomy, at least one sensor allowing in particular measurements, underwater communications, positioning, navigation, obstacle perception. 
     
     
         16 . The anti-roll stabilisation system according to  claim 8 , further comprising at least one sensor allowing in particular measurements, underwater communications, positioning, navigation, obstacle perception. 
     
     
         17 . The anti-roll stabilisation system according to  claim 9 , further comprising at least one sensor allowing in particular measurements, underwater communications, positioning, navigation, obstacle perception. 
     
     
         18 . The anti-roll stabilisation system according to  claim 7 , wherein the monohull surface ship intended to receive the anti-roll stabilisation system includes a wheelhouse erected on a deck of the ship's hull and the connection arm of the anti-roll stabilisation system, which is intended to pass above the ship's hull by coming against the deck of said ship, includes a notch intended to receive one of the front or rear ends of the wheelhouse, the notch edges being intended to come against one of the two front or rear ends of the wheelhouse. 
     
     
         19 . The anti-roll stabilisation system according to  claim 8 , wherein the monohull surface ship intended to receive the anti-roll stabilisation system includes a wheelhouse erected on a deck of the ship's hull and the connection arm of the anti-roll stabilisation system, which is intended to pass above the ship's hull by coming against the deck of said ship, includes a notch intended to receive one of the front or rear ends of the wheelhouse, the notch edges being intended to come against one of the two front or rear ends of the wheelhouse. 
     
     
         20 . The anti-roll stabilisation system according to  claim 9 , wherein the monohull surface ship intended to receive the anti-roll stabilisation system includes a wheelhouse erected on a deck of the ship's hull and the connection arm of the anti-roll stabilisation system, which is intended to pass above the ship's hull by coming against the deck of said ship, includes a notch intended to receive one of the front or rear ends of the wheelhouse, the notch edges being intended to come against one of the two front or rear ends of the wheelhouse.