The present disclosure provides a marine vessel location awareness device and method of using the device. The marine vessel location awareness device can include electronic components such as a sensor system, a global positioning system (GPS), a tidal gauge device, an alert system, and a microcontroller. The draft sensor can be configured to measure draft data of the marine vessel. The GPS can be configured to measure the position of the marine vessel. The tidal gauge device can be configured to measure a water level of a water body the marine vessel is traveling relative to a vertical datum. The alert system can be configured to alert the marine vessel to enter an active state when the water condition transmitted to the alert system is the unsafe water condition, when the alert system is in the active state, an alert is activated.

A system for a watercraft includes an engine sensor, a status sensor, and a watercraft operating controller. The engine sensor is operable to detect a rotational speed of the engine. The status sensor is operable to detect status data indicating a status of the watercraft. The watercraft operating controller is configured or programmed to determine whether or not an actual operation of the marine propulsion device has been started after shipment of the marine propulsion device, obtain the status data when the rotational speed of the engine reaches a first rotational speed range for the first time after a start of the actual operation of the marine propulsion device, and record the status data when the rotational speed of the engine reaches the first rotational speed range for the first time after the start of the actual operation of the marine propulsion device as initial status data in the first rotational speed range.

A system for a watercraft includes an engine sensor, a status sensor, and a watercraft operating controller. The engine sensor is operable to detect a rotational speed of the engine. The status sensor is operable to detect status data indicating a status of the watercraft. The watercraft operating controller is configured or programmed to determine whether or not an actual operation of the marine propulsion device has been started after shipment of the marine propulsion device, obtain the status data when the rotational speed of the engine reaches a first rotational speed range for the first time after a start of the actual operation of the marine propulsion device, and record the status data when the rotational speed of the engine reaches the first rotational speed range for the first time after the start of the actual operation of the marine propulsion device as initial status data in the first rotational speed range.

A diagnostic apparatus for diagnosing at least one nautical electronic device on a vessel, from a remote diagnostic center, is provided. The diagnostic apparatus is configured to: receive at least one message from the at least one nautical one nautical electronic device, including identification data for identifying the at least one nautical electronic device and alarm state data indicating a current alarm state of the at least one nautical electronic device; compare the current alarm state of the at least one nautical electronic device with a previous alarm state of the at least one nautical electronic device to detect a failure of the at least one nautical electronic device; and transmit failure detection information to a remote diagnostic center, the failure detection information comprising information associated with the failure of the at least one nautical electronic device and the identification data of the at least one nautical electronic device.

A diagnostic apparatus for diagnosing at least one nautical electronic device on a vessel, from a remote diagnostic center, is provided. The diagnostic apparatus is configured to: receive at least one message from the at least one nautical one nautical electronic device, including identification data for identifying the at least one nautical electronic device and alarm state data indicating a current alarm state of the at least one nautical electronic device; compare the current alarm state of the at least one nautical electronic device with a previous alarm state of the at least one nautical electronic device to detect a failure of the at least one nautical electronic device; and transmit failure detection information to a remote diagnostic center, the failure detection information comprising information associated with the failure of the at least one nautical electronic device and the identification data of the at least one nautical electronic device.

A method for predicting heaving motion parameters of a semi-submersible offshore platform based on heaving acceleration includes: in heaving motion of a semi-submersible offshore platform, representing heaving acceleration of the semi-submersible offshore platform based on a linear potential flow theory; considering a noise influence of a heaving motion measurement marine environment, a low-frequency influence caused by a slow change of the environment and an influence caused by a baseline drift error of an acceleration sensor, introducing a noise term, a low-frequency change term and a baseline drift error term, and uniformly representing the noise term, the low-frequency change term and the baseline drift error term by a unified Prony sequence; and removing a drift term from uniformly represented heaving acceleration, establishing a relationship between the heaving acceleration and heaving motion parameters in terms of the remaining Prony sequence with the drift term being removed, and estimating the heaving motion parameters.

Disclosed are a method, a device, equipment and a medium for dynamic positioning of a semi-submersible offshore platform. The method includes: acquiring a real-time position of the platform; if the real-time position is different from a preset position, detecting an external force torque by a first torque detector; calculating a first target thrust produced by each of propellers, controlling the propellers to produce forces according to a first target thrust torque, and detecting an actual thrust torque; obtaining a fault condition of each of the propellers if the actual thrust torque is different from the first target thrust torque, indicating that the propellers have faults; recalculating a thrust of each of the propellers, a second target thrust torque, according to the fault condition, the external force torque and the preset formula set; and controlling each of the propellers to generate the thrust according to a corresponding second target thrust torque.

Disclosed are a method, a device, equipment and a medium for dynamic positioning of a semi-submersible offshore platform. The method includes: acquiring a real-time position of the platform; if the real-time position is different from a preset position, detecting an external force torque by a first torque detector; calculating a first target thrust produced by each of propellers, controlling the propellers to produce forces according to a first target thrust torque, and detecting an actual thrust torque; obtaining a fault condition of each of the propellers if the actual thrust torque is different from the first target thrust torque, indicating that the propellers have faults; recalculating a thrust of each of the propellers, a second target thrust torque, according to the fault condition, the external force torque and the preset formula set; and controlling each of the propellers to generate the thrust according to a corresponding second target thrust torque.

Examples of systems and methods for matching a base mesh to a target mesh for a virtual avatar or object are disclosed. The systems and methods may be configured to automatically match a base mesh of an animation rig to a target mesh, which may represent a particular pose of the virtual avatar or object. Base meshes may be obtained by manipulating an avatar or object into a particular pose, while target meshes may be obtain by scanning, photographing, or otherwise obtaining information about a person or object in the particular pose. The systems and methods may automatically match a base mesh to a target mesh using rigid transformations in regions of higher error and non-rigid deformations in regions of lower error.

A method for the use in offshore crew transfer when transferring a person between a crew transfer vessel and a structure or vice versa where a prediction system for predicting vessel bow motion in response to sea waves detected by said wave detection device is used. An indicator is adapted to indicate a prediction of vessel bow motion below a first bow motion threshold value within a first predetermined time period based on said prediction system. The transfer of the person only takes place when said vessel bow motion is indicated to be below the first vessel bow motion threshold value within the first predetermined time period.