AWOISAutomated Wreck and Obstruction Information System (NOAA)
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A summary plot of wrecks from the AWOIS (1997) database suggest that they are most common near the mouths of major estuaries or ports (Fig.
Another type of "reef" habitat noted on NOS charts and in the AWOIS (1997) database, is "Obstructions.
Areas where artificial reefs have been constructed are noted by an older term, "fish havens," on NOS navigation charts but are not included in the AWOIS (1997) database.