An arctic jackup truss leg comprises a plurality of chords, an outer bracing network with a plurality of bracing elements connecting the plurality of chords, an internal bracing network with a plurality of bracing elements, and a bridge plate network with a plurality of bridge plates, wherein each bridge plate has two ends that are coupled with the bracing elements of the outer bracing network and the internal bracing network respectively.

A tower (1) having equipment (3) mounted thereon is disclosed. The tower (1) has an ice shield assembly (2) for protection to of the equipment (3) against falling ice mounted thereon. The ice shield assembly (2) comprises a tower fixture arrangement (5) being secured to the tower (1) and an ice shield (4) connected 5 to the tower fixture arrangement (5) via a hinge (6). The ice shield (4) is configured for vertically overlapping the horizontal extends of the equipment (3). The ice shield assembly (2) further comprises at least one spring element (7), e.g. in the form of a curved rod, connected at one end to the ice shield (4) and at an opposite end to the tower (1), the at least one spring element (7) 10 being configured to allow the ice shield (4) to pivot relative to the tower (1) at the hinge (6) in order to ensure a gradual transfer of energy from falling ice, which collides with the ice shield (4).

A tower (1) having equipment (3) mounted thereon is disclosed. The tower (1) has an ice shield assembly (2) for protection to of the equipment (3) against falling ice mounted thereon. The ice shield assembly (2) comprises a tower fixture arrangement (5) being secured to the tower (1) and an ice shield (4) connected 5 to the tower fixture arrangement (5) via a hinge (6). The ice shield (4) is configured for vertically overlapping the horizontal extends of the equipment (3). The ice shield assembly (2) further comprises at least one spring element (7), e.g. in the form of a curved rod, connected at one end to the ice shield (4) and at an opposite end to the tower (1), the at least one spring element (7) 10 being configured to allow the ice shield (4) to pivot relative to the tower (1) at the hinge (6) in order to ensure a gradual transfer of energy from falling ice, which collides with the ice shield (4).

An ice ramp system for a dock including a catch plate adapted for horizontal mounting on a dock side surface of a dock; a plurality of ice ramps; a plurality of brackets, each bracket including a triangular cross-section with a bisecting element; an angled ice ramp support face for angularly supporting an ice ramp; a notch at a lower end of the support face for receiving an edge of an ice ramp; a hook that extends from an upper end of the support face that is mountable to a dock top surface; and a backplate having a downwardly extending tongue that mates with the catch plate.

A floating drilling platform for offshore oil/gas drilling and exploration in ice-infested polar areas comprises a deck module, a hard compartment, and a soft compartment sequentially connected from top to bottom. The bottom of the deck module is connected to the top of the hard compartment by evenly distributed column. Both the hard and the soft compartments are cylinders centrally arranged with center wells. The deck module is also centrally arranged with a center well. The hard compartment, the soft compartment and the deck module are coincident with a centerline. The outer diameter of the soft compartment, as well as that of the deck module, is larger than that of the hard compartment. The top of the hard compartment is designed with a circular inclined plane upwardly and outwardly arranged at the outer edge. The top of the circular inclined plane is connected to the bottom of the deck module.

An ice ramp system for a dock including a catch plate adapted for horizontal mounting on a dock side surface of a dock; a plurality of ice ramps; a plurality of brackets, each bracket including a triangular cross-section with a bisecting element; an angled ice ramp support face for angularly supporting an ice ramp; a notch at a lower end of the support face for receiving an edge of an ice ramp; a hook that extends from an upper end of the support face that is mountable to a dock top surface; and a backplate having a downwardly extending tongue that mates with the catch plate.

A floating drilling platform for offshore oil/gas drilling and exploration in ice-infested polar areas comprises a deck module, a hard compartment, and a soft compartment sequentially connected from top to bottom. The bottom of the deck module is connected to the top of the hard compartment by evenly distributed column. Both the hard and the soft compartments are cylinders centrally arranged with center wells. The deck module is also centrally arranged with a center well. The hard compartment, the soft compartment and the deck module are coincident with a centerline. The outer diameter of the soft compartment, as well as that of the deck module, is larger than that of the hard compartment. The top of the hard compartment is designed with a circular inclined plane upwardly and outwardly arranged at the outer edge. The top of the circular inclined plane is connected to the bottom of the deck module.

The invention relates to a friction reduced and ice resistant water control gate abutment plates that permit, without damage to the concrete, large relative thermal movement between the abutment plate assembly and the concrete abutment or pier to which the assembly is attached. Features that provide ease of maintenance, tight sealing and debris damage resistance are also disclosed.

Modular structure for protecting an offshore vessel in a body of water from forces of ice features comprising a protective harbor wall, a flotation support, a pile, and a telescoping connection. The telescoping connection is operatively coupled to the protective harbor wall and the flotation support and constructed and arranged to axially move the protective harbor wall between a retracted position and a raised position. The protective harbor wall is constructed and arranged to enclose a harbor space and to counteract the forces of ice features. The flotation support supports the protective harbor wall and is constructed and arranged to change net buoyancy of the modular protective structure to submerge the structure such that the flotation support is positioned on a seabed. The pile is constructed and arranged to be partially disposed in the seabed to maintain the position of the flotation support on the seabed.

This Apparatus to stop damage from Frozen Ground and expanding Ice is to be used to protect property that could be damage from ground and water when it freezes. As ground and water freezes it expands, and when it thaws and refreezes it expands more this causes damage to property. On ground that freezes it expands with great force that can crush rock, this force will lift, crack, brake, crush, and push in walls. Likewise when water freezes it expands and causes great damage, this can be seen around lakes that people have landscaped and in the spring they have to fix it or redo it all over.

This invention is used to stop damage from frozen ground and ice by creating a brake line in the frozen ground and ice causing a week spot and redirecting the energy instead of pushing in a straight line this invention will cause the energy upward where the expanding ground or ice would pile up, and stops the expanding energy from damaging property. This invention may be made of any type of materials that would be smooth or slippery on at least one side. It may be held in place with bracing that may change to fit the different materials the main body is made of, such as what is required by the Department of Natural Resource or other state or government department.