Real-time system and method of underwater depth discrepancy detection, recordation and alarm notification
First Claim
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1. An underwater depth discrepancy system, comprising:
- a comparator adapted to be coupled to a ship'"'"'s depth measurement system (DMS) and electronic depth chart system (EDCS), said comparator comparing an actual depth as provided by said DMS with a chart depth corresponding to a current location of the ship as provided by said EDCS, said comparator generating one of (i) a first signal when said actual depth is greater than said chart depth, and (ii) a second signal when said actual depth is less than said chart depth;
recording means coupled to said comparator for recording the current location of the ship and said actual depth whenever one of said first signal and said second signal is generated; and
alarm means coupled to said comparator for generating at least one alarm notification when said second signal is generated.
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Abstract
An underwater depth discrepancy system and method are provided. A comparator compares an actual underwater depth with a predetermined/prerecorded chart depth corresponding to a current location corresponding to the location of the actual underwater depth. A first signal is generated when the actual underwater depth is greater than the chart depth while a second signal is generated when the actual underwater depth is less than the chart depth. The current location and actual underwater depth are recorded whenever the first or second signal is generated. In addition, one or more alarms are generated when the second signal is generated.
25 Citations
19 Claims
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1. An underwater depth discrepancy system, comprising:
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a comparator adapted to be coupled to a ship'"'"'s depth measurement system (DMS) and electronic depth chart system (EDCS), said comparator comparing an actual depth as provided by said DMS with a chart depth corresponding to a current location of the ship as provided by said EDCS, said comparator generating one of (i) a first signal when said actual depth is greater than said chart depth, and (ii) a second signal when said actual depth is less than said chart depth; recording means coupled to said comparator for recording the current location of the ship and said actual depth whenever one of said first signal and said second signal is generated; and alarm means coupled to said comparator for generating at least one alarm notification when said second signal is generated. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An underwater depth discrepancy system, comprising:
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a depth measurement system (DMS) for measuring an actual depth of a water column beneath said DMS at a current location thereof; an electronic depth chart system (EDCS) for storing predetermined chart depths and corresponding locations thereof; a comparator coupled to said DMS and said EDCS, said comparator comparing said actual depth with one of said chart depths corresponding to the current location, said comparator generating one of (i) a first signal when said actual depth is greater than said chart depth, and (ii) a second signal when said actual depth is less than said chart depth; recording means coupled to said comparator for recording the current location of the ship and said actual depth whenever one of said first signal and said second signal is generated; and alarm means coupled to said comparator for generating at least one alarm notification when said second signal is generated. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A method of underwater depth discrepancy detection, recordation and notification, comprising the steps of:
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comparing an actual water depth beneath a ship at a current location thereof with a chart depth corresponding to the current location of the ship; generating a first signal when said actual water depth is greater than said chart depth; generating a second signal when said actual water depth is less than said chart depth; recording the current location of the ship and said actual water depth whenever one of said first signal and said second signal is generated; and generating at least one alarm notification when said second signal is generated. - View Dependent Claims (16, 17, 18, 19)
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Specification