Abstract: A vessel having an elongated shape, and being moored to the sea bed in a substantially fixed orientation. The vessel includes at least along its longitudinal sides, near keel level, two transverse skirts having such a width that the natural roll period of the vessel is above a predetermined period, the natural roll period of the vessel without the skirts being below the predetermined period.

Abstract: A hydrocarbon transfer system includes a first and second floating structure and a substantially horizontal transfer pipe system submerged below water level interconnecting the floating structures. The transfer pipe system includes a flow line support member which is with at least one end attached to a connection head, a number of hydrocarbon flow lines being connected along the support member via carrier members. The connection head includes a cable or chain connected to one of the floating structures, connectors situated on the connection head or at the position of the support member near the connection head, which connectors are on one side in fluid connection with the flow lines and on the other side in fluid connection with a flexible flow line extending from the connection head to the floating structure.

Abstract: A hydrocarbon transfer system includes a first and second floating structure and a substantially horizontal transfer pipe system submerged below water level interconnecting the floating structures. The transfer pipe system includes a flow line support member which is with at least one end attached to a connection head, a number of hydrocarbon flow lines being connected along the support member via carrier members. The connection head includes a cable or chain connected to one of the floating structures, connectors situated on the connection head or at the position of the support member near the connection head, which connectors are on one side in fluid connection with the flow lines and on the other side in fluid connection with a flexible flow line extending from the connection head to the floating structure.

Abstract: Hydrocarbon transfer system includes a first structure having a substantially vertical first arm hingingly connected to the first structure via a first articulation around a substantially horizontal axis and a second arm attached to the first arm in an articulation joint, the second arm having a connecting arm part carrying a releasable connector for connecting to a floating second structure and a restoring arm part carrying a counterweight for exerting a restoring force on the second structure that is connected to the second arm upon relative movement of the first and second structures, characterized in that damping elements are provided above water level, acting on the second arm for damping movement of the second arm around the articulation joint upon transition of the second arm from an operative position to an inoperative position after disconnecting the releasable connector from the second structure.

Abstract: Hydrocarbon transfer system includes a first structure having a substantially vertical first arm hingingly connected to the first structure via a first articulation around a substantially horizontal axis and a second arm attached to the first arm in an articulation joint, the second arm having a connecting arm part carrying a releasable connector for connecting to a floating second structure and a restoring arm part carrying a counterweight for exerting a restoring force on the second structure that is connected to the second arm upon relative movement of the first and second structures, characterized in that damping elements are provided above water level, acting on the second arm for damping movement of the second arm around the articulation joint upon transition of the second arm from an operative position to an inoperative position after disconnecting the releasable connector from the second structure.

Abstract: The invention relates to a vessel having an elongated shape, and being moored to the sea bed in a substantially fixed orientation. The vessel comprises at least along its longitudinal sides, near keel level, two transverse skirts having such a width that the natural roll period of the vessel is above a predetermined period, the natural roll period of the vessel without the skirts being below said predetermined period.