A method for determining a displacement of an anchor is provided. The method includes the steps of: determining an initial position of the anchor; and determining a displacement of the anchor. The step of determining the displacement of the anchor includes (i) measuring anchor velocity values, (ii) measuring at least one further physical quantity associated with the anchoring, (iii) deciding whether the anchor is at rest or in motion, wherein a value of the further physical quantity is taken into account in the decision, and (iv) integrating the velocity values over time during intervals when the anchor is deemed to be in motion.

A system and computer-implemented method include a wireless network hub configured to forward received sensor readings to a sensor analysis system. One or more sensor units coupled to the wireless network hub and affixed to a structure are configured to wirelessly transmit data to the wireless network hub at a first time frequency, and, in response to a detected danger to the structure, wirelessly transmit sensor readings to the wireless network hub at a second time frequency greater than the first time frequency.

An advisory system of a vessel that monitors variables of a vessel system inclusive of systems and subsystems that are used to operate the vessel. The advisory system may use machine-learning to learn from an operator (i) whether or not two variables are related to one another, and (ii) likelihood that a variable will reach a threshold, and, optionally, time until reaching the threshold. The system may receive operator feedback (i) to indicate whether the two variables are related to one another, and (ii) whether a behavior of the variable is normal or not normal. Thereafter, if a determination that the same two variables are related to one another and behaving in a similar manner, provide notification to the operator of the behavior. In response to determining that the variable is behaving (e.g., trending) in a similar manner that is not normal, providing a notification to the operator.

The boat drain tube with an integral leak detector provides an audio and/or visual alarm to indicate the presence of a water leak within a drain of a boat. The boat drain tube includes a hollow, cylindrical tube having opposed first and second open ends, and first and second hollow, cylindrical electrodes rigidly mounted therein. The first and second hollow cylindrical electrodes are axially spaced apart from one another to define an electrically nonconductive gap therebetween. An alarm, an electrical power source, and the first and second hollow, cylindrical electrodes are connected in series to define a circuit open at the gap. The alarm may be an audio alarm, a visual alarm (such as lights, light emitting diodes or the like), or a combination of audio and visual alarms. When water enters the gap between the first and second hollow cylindrical electrodes, the circuit closes to activate the alarm.

A system and method for deterring theft of a marine vehicles is provided. The system is designed to collect barometric pressure data and analyze it to determine whether there has been a sudden change in elevation that may be indicative of a theft. The system is also designed to collect environmental data pertaining to a marine vehicle's normal environment and compare it to a normal environmental state of the marine vehicle in order to detect changes that may be indicative of a theft. Additionally, the system is designed to monitor equipment of the marine vehicle and alert a user if the equipment has been moved in a way that may be indicative of a theft. When the system determines an event has occurred that may be indicative of a theft, the system may alert the user by triggering an alarm via a computer readable signal.

A safety apparatus designed to prevent electric shock and protect equipment on or around marinas or docks. Said apparatus alerts and electrically isolates the marina or dock from the power source in the event a hazardous condition is detected. Safety hazards include, but are not limited to: Earth-ground fault, electricity in the water, high-water condition, or dock-break away condition. Comparing to prior art, the distinction of said invention is providing personal and equipment protection from all hazardous scenarios, and a fail-safe operation.

A system and computer-implemented method include a wireless network hub configured to forward received sensor readings to a sensor analysis system. One or more sensor units coupled to the wireless network hub and affixed to a structure are configured to wirelessly transmit data to the wireless network hub at a first time frequency, and, in response to a detected danger to the structure, wirelessly transmit sensor readings to the wireless network hub at a second time frequency greater than the first time frequency.

A monitoring system for use in a recreational watercraft operable to improve driver awareness of a surface rider engaged in a surface water sport supported by the watercraft. The surface rider may be towed by the watercraft or riding a wake provided by the vehicle. Sensors monitor the conditions of the surface rider and a processor analyzes the sensor data to generate feedback indicating status conditions to the driver. Multimodal feedback may be achieved using a plurality of feedback indicators having different modes of operation.

A method for determining a displacement of an anchor is provided. The method includes the steps of: determining an initial position of the anchor; and determining a displacement of the anchor. The step of determining the displacement of the anchor includes (i) measuring anchor velocity values, (ii) measuring at least one further physical quantity associated with the anchoring, (iii) deciding whether the anchor is at rest or in motion, wherein a value of the further physical quantity is taken into account in the decision, and (iv) integrating the velocity values over time during intervals when the anchor is deemed to be in motion.

A system and method for deterring theft of a marine vehicles is provided. The system is designed to collect barometric pressure data and analyze it to determine whether there has been a sudden change in elevation that may be indicative of a theft. The system is also designed to collect environmental data pertaining to a marine vehicle's normal environment and compare it to a normal environmental state of the marine vehicle in order to detect changes that may be indicative of a theft. Additionally, the system is designed to monitor equipment of the marine vehicle and alert a user if the equipment has been moved in a way that may be indicative of a theft. When the system determines an event has occurred that may be indicative of a theft, the system may alert the user by triggering an alarm via a computer readable signal.