Methods and apparatus for monitoring windlass rotation are provided to determine the real time rate and length of rode release when anchoring a boat. The rotation can be monitored in real time using directional sound and/or electromagnetic radiation receivers and/or transmitter in a module attached to the windlass. Another windlass module can monitor windlass rotation using micro-electromechanical systems (MEMS) components such as accelerometers, magnetometers, gyroscopes, and/or inertial measurement units (IMU) to sense motion and/or position.

A watercraft safety flag assembly comprising a flexible planar visibility-enhancing element having a forward edge and a rear edge spaced from the forward edge by a width, and a rigid planar stiffening element secured to the flexible planar visibility-enhancing element, where the planar stiffening element substantially spans the width of the flexible planar visibility-enhancing element and is configured to provide maximum stiffening proximate the forward edge, minimal stiffening proximate the rear edge, and decreasing stiffening with increasing distance from the forward edge. There is also provided a header element joined to the forward edge of the flexible planar visibility-enhancing element and which forms a cylindrical sleeve for receiving a mast, where the rigid planar stiffening element extends into the cylindrical sleeve formed by the header element.

Devices, systems and methods for real-time wave monitoring are described. One example system for real-time monitoring of wave conditions includes a plurality of buoys, wherein each of the plurality of buoys comprises a sensor array configured to continuously monitor one or more characteristics of the wave conditions, a transceiver configured to transmit, to a remote server, information corresponding to the one or more characteristics of the wave conditions over a wireless communication channel, and a tether that physically couples the buoy to an anchor, wherein the information from each of the plurality of buoys is combined with a user preference to provide a user with a message regarding the wave conditions in response to a user request, and wherein a duration between the user request and transmission of the information from each of the plurality of buoys is less than a predetermined value.

A launchable communication device for divers includes a flag, a flag operating assembly, and a receptacle. The flag is coupled to the flag operating assembly and is positionable between an extended position and a collapsed position to facilitate an opening and closing of the flag in order to communicate with others in the vicinity.

A boat includes: a propulsion device configured to generate propulsion force for a vessel body from driving force from an engine; a detection unit configured to detect a current position, a bow direction, and a movement speed of the vessel body; a steering device configured to change a cruising direction of the vessel body; a steering sensor configured to detect an operation amount of the steering device; and a control device that is connected to the propulsion device, the detection unit, and the steering sensor, and is configured to acquire an operating status of the propulsion device and a detection result obtained by the detection unit and the steering sensor, and to control the propulsion device based on the detection result. The control device executes a turning operation with the propulsion device, when the operation amount of the steering device detected by the steering sensor exceeds a threshold.

A marker buoy constructed of a main shaft extending vertically when in use and including a marker flag, a floating body, and a spool mounted to the main shaft.

A rescue system for a watercraft includes: a control device provided in the watercraft; a portable device held by a person on board the watercraft and communicating with the control device; and a position detection device that detects a position of the watercraft. The control device detects a fall of the person from the watercraft based on a signal from the portable device, stores the position of the watercraft indicated by a signal from the position detection device when the fall of the person from the watercraft is detected as an overboard event detection position, and controls at least one of a propulsion device and a steering device of the watercraft based on the overboard event detection position and the current position of the watercraft such that a current position of the watercraft approaches the overboard event detection position.

Novel techniques and equipment for anchoring a boat include sensing and measuring the real time rate and length of rode release based on detecting real time changes in the angular position of a windlass by computer vision using a portable computing device. Rode release is also detected using novel methods based on sensing sound, rode chain movement, and sensing acceleration and/or motion. The apparatus can include software operable to provide safe anchoring based on monitoring real times values of the rate and length of rode release, comparing these values to the speed and position of the boat, and providing local and remote status and alarm information to crew members.

A personal aquatic safety system includes a device that monitors vital signs of the wearer. If one or more of the monitored vital signs falls outside predetermined acceptable parameters, the safety device will emit an alarm and send a wireless distress signal. The safety device may be integrated into a garment such as an inflatable vest and maybe programs to automatically inflate pockets in the vest when the safety device detects that the wearer is experiencing physical distress based on the readings of the vital sign monitor. The monitoring device may also include a deployable tracker that can be released from the safety device and sent to the surface of a body of water so that it may emit a visual and audio alarms, and sends a wireless distress signal.

The invention discloses a binocular robot for bridge underwater detection based on 5G communication. The robot includes a body, a base, a power arm, a video collection component, a communication component and a power component. The underwater part of the bridge may be collected in the form of a video by the configured video collection component, and the robot may be driven by the power component to move underwater. Driven by a first motor, a binocular camera may rotate to observe various orientations underwater, and meanwhile may drive a cleaning component coordinated with an electric top block to wipe the lens of the binocular camera, so that the video information may be collected clearly underwater. Finally, the video information may be transmitted to a worker on the water through the communication component to achieve the effect of remote detection, which saves the underwater detection cost and improves detection efficiency.