A transfer system for transferring liquid natural gas from a ship to a facility, the transfer system comprising: - a hoisting device which is designed to be secured on a deck of the ship; - a mobile chassis, which is supported by the hoisting device; - a first duct, for transferring liquid natural gas from the ship to the facility, which has a first end designed to be connected to a liquid natural gas storage tank of the ship, and a second end; - a second duct, for the transport of inert gas, comprising a first end which is designed to be connected to an inert gas storage tank of the ship, and a second end; - a first on-board pipe for transferring liquid natural gas from the ship to the facility, said first on-board pipe being supported by the mobile chassis and comprising: • a first connection element which is associated with the second end of the first duct; • a second connection element which is designed for the connection of the first on-board pipe to a duct of the facility for transferring liquid natural gas to the facility; and • a valve which is arranged between the first and the second connection elements (16a, 16b); and - a second on-board pipe for the transport of inert gas, said second on-board pipe being supported by the mobile chassis, comprising a first connection element which is associated with the second end of the second duct, and being connected to the first on-board pipe, between the valve and the second connection element of the first on-board pipe. - a hoisting device which is designed to be secured on a deck of the ship; - a mobile chassis, which is supported by the hoisting device; - a first duct, for transferring liquid natural gas from the ship to the facility, which has a first end designed to be connected to a liquid natural gas storage tank of the ship, and a second end; - a second duct, for the transport of inert gas, comprising a first end which is designed to be connected to an inert gas storage tank of the ship, and a second end; - a first on-board pipe for transferring liquid natural gas from the ship to the facility, said first on-board pipe being supported by the mobile chassis and comprising: • a first connection element which is associated with the second end of the first duct; • a second connection element which is designed for the connection of the first on-board pipe to a duct of the facility for transferring liquid natural gas to the facility; and • a valve which is arranged between the first and the second connection elements (16a, 16b); and • a first connection element which is associated with the second end of the first duct; • a second connection element which is designed for the connection of the first on-board pipe to a duct of the facility for transferring liquid natural gas to the facility; and • a valve which is arranged between the first and the second connection elements (16a, 16b); and - a second on-board pipe for the transport of inert gas, said second on-board pipe being supported by the mobile chassis, comprising a first connection element which is associated with the second end of the second duct, and being connected to the first on-board pipe, between the valve and the second connection element of the first on-board pipe.