A system assists the driving of a ship and is configured to estimate the structural loads of the ship due to the direct wave excitation, and structural loads of the ship due to the whipping effect caused by the wave slamming. The system includes at least one reference sensor adapted to provide an indication of a motion or stress magnitude at a predetermined point of the ship structure, and is further configured to calculate an estimate of the magnitude at the predetermined point in the ship structure, compare the indication of magnitude with the estimate of the magnitude so as to determine an offset value, and correct the estimates of the structural loads and/or the estimate of the magnitude on the basis of the offset value.

A system that controls an impact load resulting from a fluid under an internal/external force is provided. The system senses an impact load, of a fluid under an internal/external force and attenuates the impact load. The present invention includes a floating means arranged horizontally inside an amount of fluid in an open space or in a sealed interior, a position adjustment means is vertically connected to the floating means and positioned inside the fluid, a sensing means disposed inside the fluid, on the floating means, the position adjustment means, or a structure in the periphery senses a measurement object. A controller predicts/monitors and predicts/controls fluid dynamics-related forces, hull stress, six-degree-of-freedom movements, and positions in connection with a transportation means or maritime structure. The floating means, the position adjustment means, and the sensing means are installed thereon, and use the value from the measurement object transmitted from the sensing means.

A rail system for large turret bearing includes a turret bearing support structure, a rail support ring provided with a L-shaped cross section including an inward directed wedge mating face, at least two rings of radially elongated segment bolt holes, and an outermost ring of wedge bolt holes, a plurality of rail segments together forming a complete circle with an outer radius slightly smaller than the radius of the wedge mating face of the rail support ring. Each segment includes a sloped outer wedge mating surface, a downward facing contact surface with threaded bolt holes corresponding to the bolt holes in the rail support ring, an upper largely horizontal surface, and an inner largely vertical surface. The rail system includes trapeze shaped wedges each with at least one bolt hole and corresponding bolt(s), adapted to be tightened down between the wedge mating face of the support ring and the sloped outer wedge mating surface of the segments, and rail bolts for fastening the rail segments. A method for mounting the rail system and a method for replacing a rail segment are also disclosed.

Disclosed herein is a marine vessel, with a control panel movably mounted to the vessel.

This invention relates to a transport system for moving at least one automated maintenance device for large substantially perpendicular surfaces, for example ship hulls, comprising a monorail system which can be laid freely and at least one drive device which can be moved on the monorail system along a movement direction. The at least one drive device has a drive unit with at least one running wheel, and the running wheel can be driven via at least one drive, preferably an electric drive. At least one pressing unit, is provided which is connected to the drive unit). The at least one pressing unit has at least one loading roller which can be pressed onto the monorail system via at least one spring element, and/or a fixing device is arranged on the drive unit, wherein a fixing roller is provided which interacts with the monorail system.

Inflatable device pressure gauge apparatus and methods are described. According to one aspect, an inflatable device pressure gauge apparatus includes a housing, an attachment mechanism configured to attach the pressure gauge apparatus to an inflatable device which comprises an air chamber which is configured to be inflated to an increased pressure above atmospheric pressure during use of the inflatable device, a pressure sensor coupled with the housing and configured to sense pressurized air from the air chamber of the inflatable device and to output a signal corresponding to an air pressure within the air chamber, a processor configured to process the signal from the pressure sensor and to control generation of a user perceptible emission regarding the air pressure of the air chamber as a result of the processing of the signal, and a power source coupled with the housing and configured to provide electrical energy to the processor.

A system for monitoring a physical change of a marine structure includes a complex optical measuring instrument configured to detect a behavior and structural change of the marine structure by using at least one optical sensor by means of optical fiber Bragg grating.

Disclosed is an apparatus that is able to generate an image to deter a shark from attacking a watercraft (e.g. a surf-craft). Also disclosed are methods of manufacturing and retrofitting watercraft to include the apparatus that is able to generate an image to deter a shark from attacking the watercraft.

The present disclosure is directed toward a marine exhaust system in which the marine exhaust is directed into the water via an exhaust system integrated within a marine rudder. Exhaust travels from the engine to the rudder via a pipe or tube and is expelled through a cavity in the rudder outward into the water. A swivel is located in the system to allow the rudder to rotate in normal steering operations to allow at least a portion of the exhaust pipe or tube to remain static.

Method and apparatus for an improved recreational canopy which may be used with watercraft wherein the canopy is constructed by using a pair of flexible, resilient rod-like members wherein one end of each of the flexible rods is inserted through mating apertures in an upright support member mounted onto the watercraft, or other structure, so that the rods are bowed outwardly and frictionally held in the stanchion. A canopy, which may incorporate solar cell fabric, is attached between the rods so that the canopy generally appears to be in an elongated V-shaped structure which stretches across a portion of the supporting structure, such as a watercraft, between the flexible rods. The upper end of the upright support member may be pivotable and the rod-like members may be disposed in a cap removably disposed on the upper end of the upright support member. A lighting system including an alternative power source being provided on the canopy. Also, a user driven pedal system for providing propulsion to a kayak watercraft is shown which includes a generator driven by the pedal system for providing additional electrical energy for use on the watercraft and for propelling a kayak by either a propeller or flappers.