An expandable flooring system for a pontoon boat includes a center floor and at least one outer floor. The outer floor is configured to hinge upwards about an edge of the center floor. At least one outrigger is extendable from a corresponding slide track under the center floor. The outrigger is configured to slide under the center floor when the outer floor is hinged upward, and slide out from the center floor for supporting the outer floor when it is hinged down and next to the center floor. A railing system surrounds the periphery of the flooring system and is secured together for providing rigidity to the flooring system.

According to embodiments disclosed herein, there is provided a modular boat that includes a first pontoon, a second pontoon, an arched coupling member, a deck frame, a deck surface and at least one inflatable seat. The first pontoon has a first longitudinal axis and the second pontoon has a second longitudinal axis. The arched coupling member is removably coupleable to the first pontoon and the second pontoon so that the arched coupling member is perpendicular to the first and second longitudinal axis. The deck frame is removably coupleable to the arched coupling member. The deck surface is removably coupleable to the deck frame and extends in a first plane that is parallel to a second plane that contains the first and second longitudinal axis. The inflatable seat is removably coupleable to the deck surface.

A multi-column tension leg platform is an offshore floating structure that is used to facilitate production of natural resources contained below the seabed. The multi-column tension leg platform includes a hull which is used to keep the entire structure afloat. The structure also includes a topside which is mounted to the top of the hull. The topside is used as a surface for supporting workers and equipment. The hull is made up of a plurality of flotation columns and a plurality of pontoons. Both the plurality of flotation columns and the plurality of pontoons are positioned about a vertical central axis of the topside. The plurality of flotation columns and the plurality of pontoons are buoyant structures that are aligned vertically and are used to keep the topside above water. The plurality of pontoons is mounted amongst the plurality of flotation columns.

An omnidirectional surface vehicle (OSV) for use in a water-borne environment is described. The OSV can comprise a platform of interconnected buoyant compartments having incorporated position thrusters to navigate the OSV. The thrusters are connected to a series of ducts and ports to enable navigation of the OSV by fluid intake/ejection. An onboard camera system can be configured to capture imagery of a subsurface structure such as a net in an aquaculture facility. AI and ML technologies can be applied to enable detection of a potential anomaly/hole in the net structure. Location of the anomaly can be determined based on any of a current position/location of the OSV, a current field of view of the camera, a position/focal length of a lens in the camera, etc. Control/operation of the OSV can be performed autonomously by an onboard computer/controller. The OSV can be further configured to communicate with a remote device.

A vessel (30) comprising a hull (15) having an apparent centre of pitch (23) located at a position between about 10% and 35% of the length of the vessel (10) measured from the aftermost point (17) of the vessel on the design waterline. The hull (15) may be bare, or alternatively may be fitted with a damping system (31) located forwardly to provide damping forces to reduce the vertical motion at the bow and hence the vertical accelerations. In one arrangement, the vessel (10) may comprise a single hull vessel. In another arrangement, the vessel (10) may comprise a multi-hulled vessel.

A moored floating offshore wind semi-submersible platform with at least three columns characterized in that columns are supported on a T-shaped underwater hull made up of two elongated pontoons, where one pontoon is perpendicular to the other pontoon and a method that allow that the semi-submersible platform is constructed in hull-assemblies and blocks at a first location, transported efficiently to a second location close to the final offshore location where the hull-assemblies and blocks may be assembled quay-side while floating in the water. The platform will support at least one wind turbine on a supporting structure (tower) but may also support two turbines and in the latter case the platform will be moored offshore with a mooring turret to allow the platform to align in a favourable direction to the wind.

A floating marine platform is provided including a central column, at least three peripheral columns circumferentially around the central column, radially extending beams from the central column that connect the peripheral columns with the central column, and structural members spanning between each adjacent pair of peripheral columns. The structural members are pre-tensioned.

A thruster system for a marine vessel includes an electric motor having an output shaft. The thruster system also includes a housing having a first housing opening and a second housing opening, the first housing opening defining a water intake, the second housing opening defining a water discharge. The thruster system further includes a rotatable member operatively coupled to, and driven by, the output shaft of the electric motor, wherein rotation of the rotatable member results in water brought into the housing through the first housing opening and expelled through the second housing opening to generate a thrust force in a direction that is greater than 45 degrees relative to a propeller direction of the marine vessel.

Framework structure and method for modular construction of an offshore framework structure comprising frameworks with a first bar functioning as a floating body, a second bar, with two posts for parallel support of the bars and two bands for tensioning the framework. A connection element is arranged at each end of the bars, each of which has a single flange for attaching a single bar to the connection element. In the connection elements, receiving areas are arranged transversely to the longitudinal direction of the bars for attaching the posts. The connection elements are constructed with respect to the longitudinal direction of the bars in such a way that an extension is configured on one side and a holder can be arranged on the opposite side so that the extension of a connection element of a framework can be joined with the holder of another connection element of a further framework.

The present invention relates to a sailboat (1) of the quadrimaran type for fish farming in the open sea or ocean, comprising at least one basic structure (2), at least one containment net (5), at least one wheelhouse and accommodations (3), at least one sail system (4) and at least one storage silo (6), which are modular and/or detachable. According to the invention, the at least one basic structure (2) comprises: at least two main hulls (7), which are parallel and spaced apart from each other and connected or fastened to each other by means of at least one arm (8); and, adjacent to each of said at least two main hulls (7), at least two secondary hulls (9) with smaller perimeters than those of the at least two main hulls (7), and which are arranged parallel to each outboard side at a distance from said at least two main hulls.