657results about "Vessel masts" patented technology

An apparatus and method for control of at least one of a plurality of semiautonomous marine vessels are provided. The system includes a control station with a communications system for network communication with marine vessels, and provides diagnostics and control for control and monitoring of the marine vessels, according to a mission plan.

A telescoping mast for supporting and raising a load may be telescopically extended by a zipper-action chain extension system further comprising a system for the management of one or more cables, such as power or communication cables traversing the length of the mast, and is capable of being locked into a rigid formation along a range of telescopic lengths.

A vessel with moonpool capable of being used offshore comprising a monohull with moonpool; a multipurpose tower mounted on the vessel; an equipment handling system removably mounted on the vessel; a movable hatch installed on top of the moonpool; and a hoist system installed inside the vessel, as well as an improved multipurpose tower, a moveable hatch and modular features for the tower. The invention is also a moveable hatch and a multipurpose tower.

A multi-purpose boat tower comprising a unitary device with discrete and integral components including a rigid frame cage mounted to a portion of the deck and transom of a boat, a horizontal platform removably mounted to the top of the rigid frame, a plurality of foldable rack structures mounted to the rigid frame, a plurality of fishing rod holders mounted to the rigid frame and a rigid pylon structure mounted to the top of the rigid frame.

The invention discloses a mast lifting device, and aims at providing a mast lifting device which is simple in structure, low in manufacturing cost, and safe and convenient to operate. The mast lifting device comprises a pedestal (1), a mast base (2) and a mast (3), wherein a screw base (4) is further fixedly arranged on the pedestal (1); a movable pillar (5) and a screw (6) are arranged on the screw base (4); a transmission device connected with the screw (6) in a transmission manner is arranged on the screw (6); a lifting base (7) is fixedly arranged on the mast (3); a movable pillar (8) rotationally connected with the lifting base (7) is arranged on the lifting base (7); the screw (6) is in threaded connection with the movable pillar (8); and rotation directions of the movable pillar (5) and the movable pillar (8) are the same as that of the mast (3) around the mast base (2). The mast lifting device is applied to the technical field of lifting masts.

An apparatus and method for use to raise and lower a sailboat mast are described. A channel (101) in a base (103) complements and is capable of receiving a guide (105) of a mast (107) that is slideably mounted inside the base (103). A gear (111) having a handle (113) is operably connected to a plurality of teeth (109) that run longitudinally down the length of guide (105). A bracket (115) attaches the gear (111) to the base (103). In an embodiment of the invention, a wheel (409) that is attached to bracket (413) engages a second guide (405) so as to support the mast (407) by acting to counter forces applied to and by the gear (111) during mast (407) raising and lowering.

As one non-limiting example, a foldable mast assembly for a sailing vessel is provided. The foldable mast assembly includes a lower mast section; an intermediate mast section having a lower end foldably coupled to an upper end of the lower mast section; an upper mast section having a lower end foldably coupled to an upper end of the intermediate mast section; and a boom coupled to the lower mast section. A locking device internal the mast assembly is also provided to inhibit folding of the mast assembly.

A vertically elevated gate mast with open front that is divided into multiple sections and is assembled section by section from bottom to the top. The first section is an integrated structure, and 2^nd to nth sections are divided into a left part and a right part. Each left and right partis assembled by connecting front upright posts, back upright posts, upper beams, lower beams and brace rods. Corresponding left and right parts are then connected with back beams and brace rods to form each section with beams and brace rods at the left, right and back sides. Lifting and lowering of the mast is realized by drawworks. Installation is performed from the ground, by assembling the left parts and the right parts with the back beams and the brace rods into a shape of gate, and then lifting each section as a whole with a crane.

An automatic rising flag assembly includes a bracket connected to a water vessel and an elongated flagpole. The assembly further includes a mechanism connected to the water vessel and the bracket so that the flagpole can be pivoted and maintained between up and down positions. Such a mechanism includes a plurality of electrical contacts disposed at a ski handle and which send a signal to the mechanism while a skier has a grip around the electrical contacts. When a skier lets go of their grip, the signal is cancelled and causes the mechanism to release the flagpole upwardly for notifying others of the downed skier.

An arch assembly 10 for pivotably mounting on a boat 12, its method of manufacture, and deployment in use. The assembly 10 has an arch 14 with a generally inverted U-shaped configuration, a forward edge region 16 and an aft edge region 18, a laterally extending top portion 20 generally spanning the width of the boat 12 and a pair of downwardly extending leg portions 22, 24 for connection to the boat 12. Each leg portion 22, 24 has a lower basal edge 26, 28. A knuckle joint 30, 32 is provided adjacent to an edge region of the basal edge 26, 28 about which the arch assembly 10 may pivot from a secured upright position through intermediate positions 36 to an extended lower position 38 through a number (R) degrees of arcuate displacement. An anchoring subassembly 40, 41 provided adjacent to another region of the basal edge 26, 28 for releasably securing the arch assembly 10 to the boat 12. Means for influencing 42 pivotable movement 43 of the arch assembly 10 as it moves arcuately are also provided.

A crew boat for transporting personnel to and from an offshore platform is equipped with a passenger capsule and a basket-like cradle, which retains the passenger capsule adjacent a passenger deck during the voyage. The passenger capsule forms a watertight enclosure, which can serve as a life raft in emergency. The passenger capsule is equipped with its own automated heave compensation system, power supply, and stabilization means. The passenger capsule is equipped to be lifted and lowered onto the cradle using platform-mounted cranes.

An automatic outrigger securing assembly, for use on a fishing boat which has structural support members on the vessel. The securing assembly includes a coupler for releasably securing the outrigger in a fixed position, as well as a collar assembly for interfacing with the coupler. The coupler receives and locks the collar means in a select position, and also includes a release mechanism for the collar. When the outrigger is in a laydown or collapsed configuration, the securing assembly automatically receives and safely retains the outrigger in a desired position, and can also automatically release the outrigger.

An apparatus having a composite sea-based structure with a first carbon nanotube infused material and a second carbon nanotube infused material. The first and second carbon nanotube infused materials each having a range of carbon nanotube loading selected to provide different functionalities.

A method for reconfiguring the hull form of a reconfigurable variable-draft vessel having a side hull and a center hull. In a method in accordance with the illustrative embodiment of the present invention, ballasting and de-ballasting operations assist in the vertical translation of the center hull relative to the side hull.

An application for a boat tower load relief system includes a boat tower support post connected to a receptacle for the boat tower support post by a hinge. The boat tower load relief system includes a torsion spring with a first end, a first winding, a central bend, a second winding and a second end. The central bend pushes on a boat tower support post section of the hinge and the first end and the second end of the torsion spring push on a support plate which is attached to the receptacle for the boat tower post.

The invention relates to a ship used retractable mast, and belongs to the ship construction. The prior mast with fixed height is unlikely to meet the requirements for ships navigating across three water systems of rivers, streams and seas. The retractable mast includes two identical retractable segment groups arranged in the same direction, two drivers respectively collocated to the two retractable segment groups and respectively positioned inside the two retractable segments in such a state that the two drivers can move on the drive-corresponding second mast segment in the vertical direction; a bridge connection body bonded with the tail mast segments is arranged between the two tail mast segments of the two retractable segment groups; and a vertical pole is connected with the bridge connection body. The two retractable segments can retract at the same time under the action of the drivers to lift the bridge connection body and the vertical pole, thus achieving retraction of the entire mast and adjusting the height of the mast to meet the requirement for ships navigating across three water systems of rivers, streams and seas.

The invention discloses a cross foldable automatic retracting and spreading wing type sail. A first fixed pulley is fixed at the upper end of a multi-section main mast, a second fixed pulley is fixed at the right end of a top frame cross rod, and a third fixed pulley is fixed at the right end of a bottom frame cross rod. The left ends of an upper spring telescopic rod and a lower spring telescopic rod are fixedly connected with one corresponding frame cross rod respectively, and the right ends are fixedly connected with one corresponding sliding block in snap grooves respectively. A first sail body fixing mast is arranged close to the right of the multi-section main mast, the upper end of a second sail body fixing mast is fixedly connected with a first sliding block at the top, and the lower end of the second sail body fixing mast is fixedly connected with a second sliding block at the bottom. One end of a first pulling cable is fixedly connected with the lower end of the inside of a base, and the other end is fixedly connected with the first sliding block. One end of a second pulling cable is fixedly connected with the upper end of the inside of the multi-section main mast, and the other end is fixedly connected with the second sliding block. By means of the sail, the sail is driven to be spread and retracted automatically by using hydraulic lifting rods as power, and accordingly, the wind energy utilization rate is improved.

A method and arrangement for reducing the weight and optimizing the longitudinal strength of a water-craft (1), which is especially suitable for transportation of liquefied natural gas (LNG) or other corresponding mediums and comprises a hull (2), which has a deck (3) extending over at least the main part of the water-craft (1) and a number of substantially spherical cargo tanks (4) arranged successively in the longitudinal direction (A) of the water-craft (1) and a deckhouse (5), which extend substantially above the said deck (3). The hull (2) of the water-craft (1) is provided with a continuous protective casing structure (6) known as such and which is arranged on top of the cargo tanks (4). The said deck (3) of the water-craft is arranged on the hull (2) so that the proportion of its height measured from the bottom of the water-craft to the height of the uppermost continuous portion of the protective casing structure (6) on top of the cargo tanks (4) is at most 0.55, preferably at most 0.5. In addition said protective casing structure (6) is fixed to said deck (3) and/or other structures (7) supported to the hull (2) and is dimensioned together with the other parts of the hull (2) so that together they constitute an essential part of the overall strength of the water-craft.