An offshore platform embarkation facility and an offshore platform, including a lift tower, wherein the lift tower is provided with a climbing device and the lift tower is provided with a transmission structure; a jacking frame, wherein a first moon pool allowing the lift tower to pass through is provided in the jacking frame; a lifting unit, wherein the lifting unit is installed on the jacking frame and the lifting unit is configured to cooperate with the transmission structure to raise and lower the lift tower; a lift platform, wherein a second moon pool allowing the lift tower to pass through is provided in the lift platform, and the lift platform is connected with the lift tower via the climbing device, and the lift platform is located below the jacking frame. When it is needed to load or unload personnel or goods, it is not required to lower the entire offshore platform to the height of the sea surface to enable a ship to be anchored, anchorage of ships and loading or unloading of personnel and goods can be quickly completed simply by means of the offshore platform embarkation facility, which saves energy consumption and time, improves the work efficiency and increases the service life of the offshore platform.

A system and method are disclosed for building a modular electrical system for a jack up rig, the method including but not limited to identifying rig equipment on the jack up rig that will be connected to the modular electrical system; selecting electrical equipment to control the rig equipment; placing the electrical equipment in an electrical module; and electrically connecting the electrical equipment to power cables and control cables inside of the electrical module; and testing the electrical equipment inside of the electrical module.

The offshore jack-up has a hull and a plurality of moveable legs engageable with the seafloor. The offshore jack-up is arranged to move the legs with respect to the hull to position the hull out of the water. The method comprises securing the vessel with respect to the hull of the offshore jack-up when the hull is positioned out of the water and the legs engage the seafloor. A lifting mechanism mounted on the offshore jack-up engages with a cargo carrying platform positioned on the vessel. The platform is lifted with the lifting mechanism between a first position on the vessel and a second position clear of the vessel.

The offshore jack-up has a hull and a plurality of moveable legs engageable with the seafloor. The offshore jack-up is arranged to move the legs with respect to the hull to position the hull out of the water. The method comprises securing the vessel with respect to the hull of the offshore jack-up when the hull is positioned out of the water and the legs engage the seafloor. A lifting mechanism mounted on the offshore jack-up engages with a cargo carrying platform positioned on the vessel. The platform is lifted with the lifting mechanism between a first position on the vessel and a second position clear of the vessel.

A crane with a pivotal boom. The crane has a first and a second main hoisting system, which main hoisting system are configured for independent operation. Each system comprises a hoisting cable, an upper sheave block, a hoisting block assembly suspended from the upper sheave block by the hoisting cable in a multiple fall configuration, and a hoisting winch. The upper sheave blocks of the first and second main hoisting systems are each independently pivotable about a common pivot axis relative to the boom. Each hoisting block assembly comprises a hoisting block body, multiple fixed sheaves that are fixed on the hoisting block body, and multiple disconnectable sheave members, each disconnectable sheave member comprising a frame and at least one sheave rotatably supported by the frame.

A lift system and method for supporting a structure. The lift system includes a first buoyant sponson tank comprising a sponson tank that extends from a first end to a second end, a mechanical assembly extending from the second end of the sponson tank, the mechanical assembly to transfer a load of a structure disposed on the mechanical assembly to the sponson tank. The sponson tank is configured to be displaced by a volume of fluid that is external to the tank and the tank provides a predetermined buoyant force against the structure to cause the structure to be displaced vertically.

A jack-up crane vessel or semi-submersible crane vessel is provided including a hull with a deck, and a crane on the hull for hoisting a load outside the deck. The crane includes a slewing crane base with a first suspension, an elongated boom that is rotatable around a horizontal rotation axis with respect to the first suspension, at least two pendants between the boom and the first suspension that mutually converge toward the distal boom section, a boom spacer between the boom and the first suspension, and a boom luffing installation for driving the rotation of the boom around the horizontal rotation axis between a lowered transport position and a raised operational position. In the direction of the vertical rotation axis the first suspension extends at least in the lowered transport position of the boom above the boom heel of the boom.

Scale habitable units are disclosed for use in marine environments, such as the open sea, which are inexpensive to assemble and maintain, while providing habitable space.

Scale habitable units are disclosed for use in marine environments, such as the open sea, which are inexpensive to assemble and maintain, while providing habitable space.

A jack-up platform is described having a horizontal working deck that may be jacked up out of the water by moving its legs to a position wherein they take support on an underwater bottom. The jack-up platform further comprises a mooring system for mooring a floating vessel at a mooring side of the jack-up platform. The mooring system comprises an elongated support means for supporting a hull part of the floating vessel, and guiding means connected to the hull of the jack-up platform at the mooring side. The guiding means are able to rigidly hold the elongated support means in a support position, in which the elongated support means is within reach of the hull part of the floating vessel to be supported when the hull is jacked out of the water and the jack-up platform rests on its legs. A method for mooring a floating vessel using the jack-up platform is also described.