Systems for real-time wave monitoring, which provide real-time updates of wave conditions to users who wish to access the beach for leisure or sporting activities, are described. One example system includes a plurality of buoys and a transceiver. Each of the plurality of buoys includes a sensor array configured to continuously monitor one or more characteristics of the wave conditions, and the transceiver is configured to transmit, to a remote server, information corresponding to the one or more characteristics of the wave conditions over a wireless communication channel. 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 a duration between the user request and transmission of the information from each of the plurality of buoys is less than a predetermined value.

An apparatus for connecting recreational tubes together that includes a recreational tube having a body with a circumferential sidewall surrounding a through hole, and a connector assembly including a first loop and a second loop along a portion of an exterior side of the sidewall and each loop having an end attached to the exterior side of the recreational tube. Each loop having an outer perimeter oriented away from the recreational tube and the outer perimeter of the first loop being greater than the outer perimeter of the second loop. The connector assembly is configured to receive a connector for connecting the connector assembly of the recreational tube to another recreational tube

A leash system and methods of use are provided that includes a leash cord configured to be affixed at a first end portion to a user of a personal watercraft, a switch cord, and an anchoring cord. The switch cord has a first end portion affixed to a key for connection to a kill switch of the watercraft and a second end portion affixed to the leash cord. The anchoring cord has a first end portion configured to fixedly secure the anchoring cord to the watercraft and a second end portion affixed to the leash cord. A loop is affixed in preferred examples along the anchoring cord that is configured to slidably receive the switch cord therethrough. When the leash cord is pulled taut while the anchoring cord is fixedly secured to the watercraft, the first end portion of the switch cord is drawn toward the loop to remove the key.

A water buoy data system transfers shoaling status. Water buoys sense water characteristics at a location. The water buoys wirelessly transfer data messages that indicate the water characteristics at the location for delivery to a computer system. The computer system receives the data messages wirelessly transferred by the water buoys that indicate the water characteristics at the location. The computer system generates and transfers the shoaling status for the location based on the water characteristics at the location.

Water buoys sense water characteristics and wirelessly transfer the water characteristics for delivery to a computer system. The computer system receives the water characteristics wirelessly transferred by the water buoys. The computer system receives a location and a user water condition preference transferred by a user communication device. The computer system processes the water characteristics, the location, and the user water condition preference, and in response, generates and transfers water condition information for the location for delivery to the user communication device.

A water buoy data system stabilizes an offshore vessel. Water buoys sense wind characteristics and water characteristics at a location of the vessel. The water buoys wirelessly transfer data messages that indicate the wind characteristics and water characteristics at the location of the vessel for delivery to a computer system. The computer system receives the data messages wirelessly transferred by the water buoys that indicate the wind characteristics and the water characteristics at the location of the vessel. The computer system determines wave forces based on the wind characteristics and the water characteristics at the location of the vessel. The computer system indicates the wave forces to control vessel engine thrusters to counter the wave forces and stabilize the vessel.

In a water buoy, a power system generates electrical energy from water kinetics and transfers the electrical energy to a sensor array, processing circuitry, and communication interface. In the water buoy, the sensor array detects buoy locations, water velocities, water velocity directions, and wind speeds. In the water buoy, the processing circuitry aggregates the detected buoy locations, the detected water velocities, the detected water velocity directions, and the detected wind speeds into data messages. In the water buoy, the communication interface wirelessly transfers the data messages for delivery to a computer system.

A water buoy data system transfers a water current warning. Water buoys sense wind characteristics and water characteristics at a location. The water buoys determine wave characteristics at the location based on the wind characteristics and water characteristics at the location. The water buoys wirelessly transfer data messages that indicate the wave characteristics at the location for delivery to a computer system. The computer system receives the data messages wirelessly transferred by the water buoys that indicate the wave characteristics at the location. The computer system generates and transfers the water current warning for the location based on the wave characteristics at the location.

Multiple systems and methods for providing supervised control of subsea vehicles for offshore asset management as well as supplemental autonomous control behaviors are described herein. These systems and methods provide offshore support and alternative supervised control of one or more vehicle generally irrespective of where the vehicle resides in an oil and gas offshore field.

Offshore airborne wind turbine systems with an aerial vehicle connected via a tether to an adjustably buoyant body. The tether may be coupled to an underwater mooring through which it may move, or it may be coupled to a floating platform through which it may move. The buoyancy of the buoyant body may be adjusted to change the tension in the tether or for other purposes.