114results about "Boat guiding devices" patented technology

Sub-ordinate and host maritime vessels are connected to each other by a tow loop trailed by the host vessel through a capture frame which engages the sub-ordinate vessel. The capture frame acts to engage the sub-ordinate vessel in the transitional coordinate space shared jointly between the sub-ordinate and host vessels, which vessels can be either or both surface-going, submersible, and/or non-surface vessels. The capture frame possess features which allow it to disengage from the host vessel while remaining semi-related and recoverable by a linkage of one or more tensioned lines to the host vessel during the time that its tow loop is connected to the sub-ordinate vessel.

The invention discloses a device for launching and recovering a boat on a mother ship. An opening and a launching and recovering door are arranged on the rear side of a cabin. The launching and recovering door comprises a door plate seat driven by a lifting device to ascend and descend and a door plate hinged on the door plate seat, and the door plate is driven by an opening and closing device to be opened and closed. A rail leading to the opening is arranged in the cabin, a trolley for carrying the boat and moving on the rail is arranged on the rail, and a bracket capable of docking with the rail when the door plate is opened is arranged on the door plate. The door plate is opened to enable the bracket to be docked with the rail, the boat is pushed onto the door plate, the door plate is driven by the lifting device to descend below the water level, and accordingly the boat is launched. When the boat is recovered, the door plate and the bracket are driven to descend below the water level, the boat runs to above the bracket, then the door plate is lifted to enable the bracket to support the boat, the door plate is lifted continuously to enable the bracket to be docked with the rail, and the boat is pulled into the cabin. By the device, launching and recovery of the boat on the mother ship is achieved quite conveniently, and the whole boat launching and recovery process is stable and safe.

A marine propulsion system that utilizes a transmission shift sequence to control shifting of the propulsion system transmission between forward and reverse gears. The marine propulsion system includes a controller that executes the transmission shift sequence using engine speed and transmission fluid pressure signals to determine the timing of various steps in the shift sequence. The controller is connected to a shift actuator for the transmission and to an engine speed throttle to thereby control transmission shifting and engine speed as a part of the transmission shift sequence. By monitoring engine speed and transmission fluid pressure, and by controlling transmission shifting and engine speed settings, the transmission shift sequence can provide the operator with the ability to carry out quick shifts that will neither stall the engine nor damage the transmission clutch.

The invention provides a marine working boat automatic storing device which comprises a working boat and a sliding way matched with the working boat. The sliding way is arranged on a boat side face and is of a downward-oblique structure. A trolley and a track matched with the trolley are arranged below the tail end of the sliding way. The axis of the track and the axis of the sliding way are on the same straight line. The height of the surface of the trolley on the track is the same as the height of the surface of the sliding way. A buffering and fixing device is arranged on the trolley. According to the working boat automatic storing device, full automation of a working boat automatic storing process can be achieved, the device is suitable for automatic storing of the working boat under the state that a mother ship navigates at medium-low speed, and system operation is convenient and reliable.

The invention belongs to the field of auxiliary equipment of ships and relates to a work boat launching and restoring device, in particular to a stern slipway type work boat launching and restoring device. The stern slipway type work boat launching and restoring device comprises a chute which is obliquely and downwardly arranged on a stern portion of a ship body, the tail end of the chute is movably connected with a stern door, a traction device is arranged on the two sidewalls of the chute, a traction slipway assembly matched with a line type of the work boat is arranged in the chute along the oblique direction of the chute, and a stern door slipway matched with the traction slipway assembly is arranged on the stern door. By arranging the chute on the stern portion and the stern door matched with the chute, a passageway allowing the work boat to go in and go out of the ship body is formed; the traction device arranged on the chute is used for providing power for the work boat to go in/go out; the stern slipway type work boat launching and restoring device is simple in structure, highly reliable, capable of working in severe sea conditions or sailing processes of a mother ship and free from potential safety hazards.

The invention relates to a variable-height platform, which is fitted to a watercraft and has an additional travel and/or a longitudinally movable mounting plate, by means of positive control means such that obstructions by technical means in the pivoting area can be fully bypassed without long pivoting arms and special linear-movement cylinders, and a reasonable immersion depth of the platform is ensured in all cases and, in the event of failure of the linear-movement cylinder, the platform can always be moved to the position A by means of an energy store or accumulator.

Device (10) or apparatus for launching at least one boat (12) from a structure (14), that is at least partially surrounded by water (16), into the water. The device (10) comprises at least one launch ramp (18) and means to effect translational displacement of said at least one launch ramp (18) when the device (10) has been mounted on said structure (14) in order to enable the position of said at least one launch ramp (18) to be changed before launching said at least one boat (12) into the water (16).

A launch, recovery, and handling system includes a track system arranged on a deck of a ship and a stern door of the ship. The launch, recovery, and handling system also includes an aft cradle and a forward cradle that are connected to the track system and moveable in first and second directions along the track system. The aft cradle is moveable from a first position at a first area inside the ship to a second position on the stern door for at least one of launching and recovering a payload.

A parallelgram arrangement of linkages interconnect a stern ramp frame with a plurality of parallel rails vertically adjusted to positions above the ramp frame by actuators for reception and maintenance of a watercraft thereon with minimized vibration, further reduced by shock-absorbing springs positioned in engagement with the rails and the rail actuators. Rail positioning adjustment by the actuators is effected under computer control to match different hull shapes of the watercraft that are curved or v-shaped and therefore non-flat.

The invention discloses a mounting precision control method for stern door hinges. The mounting precision control method comprises the steps: A, preparation work before mounting is conducted; B, a ground sample datum line is scribed on the horizontal ground according to theoretical data of a drawing; C, a stern door is hoisted to the designated position, specifically, the stern door is hoisted onto a pier position on one side of the datum line through a crane; D, horizontal measuring points of the stern door are selected; E, the precision of a theoretical centerline is examined, and transversecenterline positioning lines of the hinges are scribed; F, horizontal direction mounting lines of the hinges are scribed; G, machining is conducted, and a dummy shaft and a short sleeve are mounted;H, the longitudinal direction of the dummy shaft is adjusted; I, the transverse central positions of hinge seat plates are adjusted; J, hinge seat fixing spacers are mounted; K, adjusting spacers aremeasured and prepared; L, the adjusting spacers are subjected to point welding; M, drilling, tapping and hinge seat fixing are conducted; N, hinge seats are mounted; O, the adjusting spacers are welded; and P, the dummy shaft is dismounted, and hinge pin shafts are mounted. The mounting precision control method is suitable for mounting of the two or more sets of hinges of the stern door, a hatch cover and a gang plank, a mounting method is simple, and the precision is high.

The invention discloses a skiff retracting and releasing device. According to the device, a cabin for placing skiffs is formed in a hull, a stern of the hull is provided with a channel inclining downwards, one end of the channel is connected with the cabin, and a stern door capable of rotating downwards is hinged to the other end of the channel; the stern door, the channel and the cabin are respectively provided with a plurality of idler roller set formed by idler rollers supporting the bottoms of the skiffs from the two sides, the two sides of each idler roller set of the cabin are respectively provided with a movable guide rail, and a trolley is arranged on the movable guide rail on each side and provided with a draft gear and a skiff pushing device. According to the skiff retracting and releasing device, the stern door can rotate downwards, so that the skiffs slide to the hull from the idler roller sets on the stern door through the channel conveniently and are pushed to the corresponding positions of the cabin through the trolleys to be fixed, the operation is convenient to carry out, the multiple skiffs can be retracted and released through the retracting and releasing device on a mother ship, and the skiff retracting and releasing device is convenient to operate and high in safety.