A non-transitory computer-readable recording medium stores therein a program that causes a computer to execute a process. The process includes calculating, for each of a plurality of grids through which a track of a specific vessel passes, an angle of approach and an angle of exit of the track, respectively; extracting a grid for which the angle of approach and the angle of exit conform to a determining condition set for each of the grids based on the determining condition; and determining whether the specific vessel has taken an avoidance behavior based on a relative distance from another vessel corresponding to a position of the specific vessel in a track in the extracted grid.

A non-transitory computer-readable recording medium stores a program that causes a computer to execute a process. the process includes extracting a sailing log of a ship in a sea area with a sailing route existing therein, the sea area being such that a distance between two ships of the ship and another ship is less than a predetermined value and at least one of the two ships has a ship track deviating from the sailing route; and evaluating risks at a plurality of points that are included in the sea area, based on the extracted sailing log.

A control system for posture control tabs of a marine vessel prevents posture control tabs from coming into contact with a foreign object. The posture control tabs are mounted on a stern to control a posture of a hull. Actuators actuate the respective posture control tabs. When it is judged that that the hull is being loaded onto a trailer or it is detected that the hull has entered a speed restriction zone, a controller controls the actuators to position the posture control tabs at retracted positions.

A Floating Production, Storage and Offloading (FPSO) surveillance system (7) is equipped with an adjustable alarm threshold that suppresses nuisance alarms if liquid level variations in FPSO crude oil and/or other liquid storage tanks (6) monitored by the system do not exceed estimated oscillating liquid level variations due to oscillating motions of the FPSO unit (1) during severe weather conditions.

A Floating Production, Storage and Offloading (FPSO) surveillance system (7) is equipped with an adjustable alarm threshold that suppresses nuisance alarms if liquid level variations in FPSO crude oil and/or other liquid storage tanks (6) monitored by the system do not exceed estimated oscillating liquid level variations due to oscillating motions of the FPSO unit (1) during severe weather conditions.

A computer implemented method and apparatus for a marine vessel data system, the method comprising: receiving data from at least one sensor configured to measure vibration and operationally arranged to the marine vessel to provide time-domain reference sensor data; maintaining the time-domain reference sensor data within a data storage system; generating a Fast Fourier Transform (FFT) on the time-domain reference sensor data to provide a plurality of reference spectra files in frequency-domain, wherein each reference spectra file comprises spectra data defined by amplitude information and frequency information, and each spectra file is associated with condition information determined based on collection of the time-domain reference sensor data; normalizing each reference spectra file by converting the frequency information to order information using the condition information to provide normalized reference spectra files; and training a convolutional autoencoder type of neural network using the normalized reference spectra files.

A computer implemented method and apparatus for a marine vessel data system, the method comprising: receiving data from at least one sensor configured to measure vibration and operationally arranged to the marine vessel to provide time-domain reference sensor data; maintaining the time-domain reference sensor data within a data storage system; generating a Fast Fourier Transform (FFT) on the time-domain reference sensor data to provide a plurality of reference spectra files in frequency-domain, wherein each reference spectra file comprises spectra data defined by amplitude information and frequency information, and each spectra file is associated with condition information determined based on collection of the time-domain reference sensor data; normalizing each reference spectra file by converting the frequency information to order information using the condition information to provide normalized reference spectra files; and training a convolutional autoencoder type of neural network using the normalized reference spectra files.

An anti-sinking and anti-fire safety system for boats includes inflatable devices, is installed in a first deflated configuration and assumes a second irreversibly inflated configuration, with a volume considerably greater than the first deflated configuration. Each inflatable device is connected to at least one dispenser expanding a predetermined quantity of non-inflammable foam within the corresponding inflatable device to assume the desired volume in the second inflated configuration. Each dispenser is connected to an activator to activate the corresponding dispenser by remote control of the user, sent by a control system. The emergency system also includes dispensers, connected to the activator expanding non-inflammable foam between the free spaces present between the inflatable devices already inflated, and in any other fire risk space. The non-inflammable foam sublimates after a known time. The control system includes a processor and a communication interface.

The vehicular carbon monoxide and volatile organic compounds alarm is configured for use with a vehicle. The vehicle is further defined with a passenger space. The vehicular carbon monoxide and volatile organic compounds alarm is maintained in the passenger space of the vehicle. The vehicular carbon monoxide and volatile organic compounds alarm is a sensor. The vehicular carbon monoxide and volatile organic compounds alarm monitors the concentration of carbon monoxide and volatile organic compounds in the air in the passenger space of the vehicle. The vehicular carbon monoxide and volatile organic compounds alarm generates a visible and audible alarm when the concentration of carbon monoxide and volatile organic compounds in the passenger space of the vehicle exceeds a predetermined level. The vehicular carbon monoxide and volatile organic compounds alarm comprises an operating circuit and a housing. The housing contains the operating circuit.

A self-righting sailing vessel is described. The self-righting sailing vessel may determine the occurrence of several predetermined events, such as the self-righting sailing vessel capsizing, present or imminent inclement weather, and/or a present or imminent vessel or large marine animal. Upon detection of one of these events, the self-righting sailing vessel causes at least it's hull to become partially or completely submerged beneath the water. The self-righting sailing vessel is configured such that its rig is more buoyant than the rest of the vessel when the vessel is completely submerged beneath the water, causing the vessel to move towards an upright position while underwater. When the vessel is pointing towards an upright position, the vessel may begin ascending until it surfaces and is ready to continue sailing on top of the water.