It is described an emergency device (100) for divers comprising a watertight case (101) structured to assume a submerged position and an emerged position. The watertight case includes: a depth sensor (102) configured to determine a depth value associated with the submerged position assumed by the emergency device when a user activates an emergency procedure; a positioning device (103) configured to determine a geographic position, including latitude and longitude, assumed by the emergency device (100) in the emerged position; a GSM or satellite telephone transmitter/receiver (104) configured to transmit an emergency message comprising said depth value and said geographic position.

Embodiments of the present disclosure provide methods and apparatuses for setting up and/or adjusting backhaul link in maritime network. A method in a first radio node in a first ship comprises: obtaining a first position and moving information of the first ship; receiving a second position and moving information of a second ship from a second radio node in the second ship; determining whether to connect to the second radio node to form a maritime network, based on radio measurements between the first and second radio nodes, the first position and moving information and the second position and moving information.

A smartphone marine vessel location system utilizes global positioning to determine the location and trajectory of marine vessels. When two marine vessels have a trajectory that will bring the vessels within a warning zone a trajectory alert is activated and when the two vessels enter into a warning zone, a collision warning is activated. An App on the smartphones may produce a display showing the location of the marine vessels and may produce the alerts when required. The smartphone may also communicate with other navigational system on the marine vessel to produce a display and alerts, such as through Bluetooth. The location of marine vessels may be acquired through the App, through a crowd-sourcing application, and/or through a carrier sourced location.

The illuminated lifesaving jacket is a personal floatation device compromising LED lighting, a cell phone pocket, a control unit, locator module, and a jacket battery pack. The LED lighting may increase the visibility of the jacket and may be activated by the control unit based upon input from a manual switch, a water-activated switch, or an application program running on a personal communication device such as a smart phone. The personal communication device may be held in the waterproof cell phone pocket and may wirelessly link to the control unit. The control unit may acquire location information from the locator module and may transmit messages that include location information to authorities in an effort to seek help. The jacket battery pack may provide electrical energy for the control unit, locator module, and personal communication device. A wristband may provide additional LED lighting to enhance visibility.

It is described an emergency device (100) for divers comprising a watertight case (101) structured to assume a submerged position and an emerged position. The watertight case includes: a depth sensor (102) configured to determine a depth value associated with the submerged position assumed by the emergency device when a user activates an emergency procedure; a positioning device (103) configured to determine a geographic position, including latitude and longitude, assumed by the emergency device (100) in the emerged position; a GSM or satellite telephone transmitter/receiver (104) configured to transmit an emergency message comprising said depth value and said geographic position.

Embodiments of the present disclosure provide methods and apparatuses for setting up and/or adjusting backhaul link in maritime network. A method in a first radio node in a first ship comprises: obtaining a first position and moving information of the first ship; receiving a second position and moving information of a second ship from a second radio node in the second ship; determining whether to connect to the second radio node to form a maritime network, based on radio measurements between the first and second radio nodes, the first position and moving information and the second position and moving information.

A buoy, and systems and methods for rescuing people isolated on large bodies of water are disclosed. The buoy includes a remotely activatable device that is activatable when a signal is received from a remote source. The activatable device may be a signaling device, or an assistance device that is deployable by the buoy to assist in rescuing a person. A marine communication system formed by a number of spaced apart rescue buoys is also provided. A message or key other information can be transmitted to every buoy in the network via communication with just one buoy. The methods for rescuing people isolated on large bodies of water involve providing the network of communication buoys that can receive communications from the isolated person's personal communication device, and then transmit a signal to remotely activate an activatable device in a buoy to assist in the rescue of the person.