Nautical Term: CPA
Definition of CPA
The Closest Point of Approach (CPA) refers to the geometrically closest point at which two vessels or objects can be in proximity of each other, while avoiding collision.
For instance, in the context of commercial shipping, the captain of a large container ship may consult navigational charts and weather reports to determine the CPA with another ship or hazard, such as a rocky outcropping or a fishing net. By planning a safe passage that maintains a comfortable safety margin from the CPA, the captain can help ensure the safe and efficient navigation of the ship through potentially challenging waters.
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