A floating vessel with a buoyant hull for cargo, with a load line presentation device affixed to the buoyant hull without interrupting water flow along the buoyant hull the load line presentation device presenting: a baseline load line indicator plimsoll mark and a plurality of increased capacity load line indicator plimsoll marks, with an increased capacity model in memory connected to a processor in communication with the load line presentation device; the increased capacity model configured for automatically integrating a plurality of variables including: wave size, wave period, wind speed, surface current, vessel length, type of vessel, quantity of disconnected superstructures, quantity of sheer, and bow height and identifying increased capacity load line plimsoll mark for a voyage of the floating vessel, the load line presentation device displays the increased capacity load plimsoll mark improving baseline capacity of the buoyant hull from 1% to 30%.

Methods 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 transmitters that can be 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.

Devices, systems and methods for real-time wave monitoring are described. One example method for real-time monitoring of wave conditions includes receiving, from a buoy over a first wireless communication channel, information based on continuously monitoring one or more characteristics of the wave conditions, receiving, from a user device over a second wireless communication channel, user preferences, and transmitting, to the user device over the second wireless communication channel, a message based on the information and the user preferences in response to a user request. Another example method includes transmitting, to a remote server, user preferences and a user request, and receiving, from the remote server and in response to the user request, a message based on the user preferences and information corresponding to the wave conditions. In these methods, the time duration between communication of the user request and the information acquisition may be less than a predetermined value.

The present invention relates to a decompression buoy (1) comprising an inflatable bag (2) having a tubular portion (4) defining a an inside volume (12) and a longitudinal opening portion (6) with a first end (14) leading to the inside volume (12) and a second end (16) leading to the outside. The opening portion (6) thus enables gas to flow between the outside and the inside volume (12). The opening portion (6) includes a throat (18) of transverse dimension that is smaller than the transverse dimension of the first end (14), and the second end (16) is adapted to receive the end of a diving regulator.

Provided is a mobile object including: a mobile object information transmitting unit configured to transmit, to another mobile object by optical wireless communication by a first optical wireless communication unit, first mobile object information including first inertial measurement information and first body control information; a mobile object information receiving unit configured to receive, from the another mobile object by optical wireless communication by the first optical wireless communication unit, second mobile object information including second inertial measurement information and second body control information; and an optical axis direction control unit configured to control a direction of an optical axis of the first optical wireless communication unit on a basis of the first mobile object information and the second mobile object information.

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.

Described herein is a device for recovering an object from water comprising an object attachment point, for attaching the device to the object, and an inflatable and/or buoyant target mesh element, the attachment point and target mesh element being linked by an extendible line portion which is extendible when placed under longitudinal pressure. Such a Man Overboard Recovery System allows a vessel to remain under proper control in difficult weather conditions when dealing with a casualty recovery situation.

Methods 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 transmitters that can be 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.

The present invention relates to a decompression buoy (1) comprising an inflatable bag (2) having a main portion (4) defining a main inside volume (12) and a longitudinal opening portion (6) with a first end (14) leading to the main inside volume (12) and a second end (16) leading to the outside. The opening portion (6) thus enables gas to flow between the outside and the main inside volume (12). The opening portion (6) includes a throat (18) of transverse dimension that is smaller than the transverse dimension of the first end (14), and the second end (16) is adapted to receive the end of a diving regulator.

A display control method controls a plurality of maneuvering function displays to display maneuvering functions of a marine vessel. The display control method includes changing a maneuvering function displayed on each of the plurality of maneuvering function displays based on at least one of a start state of a marine propulsion device of the marine vessel or an operation state of an operator of the marine vessel.