Man overboard alert and locating system
AssigneeSafeSea Systems, Inc.
InventorsMalcolm J. Holland, Michael J. Rainey
Life of this patent
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Abstract
A system for automatically detecting the event of a person or object falling overboard from a vessel into water includes a portable ultrasonic transmitter worn by each person or attached to selected objects on board and designed to be activated upon immersion in water, and an alarm control unit carried by the vessel containing an ultrasonic receiver. When the receiver detects a signal produced by a portable transmitter, it sounds an alarm and displays the vector velocity of the vessel relative to the portable transmitter, allowing rescue operations to be initiated and carried out even in conditions of zero visibility.
Claims8
An automatic alert and locating system comprising:
- a portable ultrasonic transmitter capable of transmitting an ultrasonic signal through water,
- an ultrasonic receiver adapted to be immersed in water and further adapted to sense the signal produced by said transmitter, and
- means coupled to said receiver for determining from the received signal the magnitude and direction of the velocity of said receiver with respect to said transmitter.
An automatic alert and locating system comprising:
- an immersion-activated portable ultrasonic transmitter capable of transmitting an ultrasonic signal through water,
- an ultrasonic receiver adapted to be immersed in water and further adapted to sense the signal produced by said transmitter, and
- means coupled to said receiver for determining from the received signal the magnitude and direction of the velocity of said receiver with respect to said transmitter.
Dependencies are inferred from the claim text.