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Obstructions (Navigation) (Dcnu)

Definition
Any object that endangers, hinders or prevents movement in or under the water or in the air, e.g., a reef, a rock, a wreck, a tower, a pinnacle or a mountain peak. (Source: Team)
Use For
Obstacles (Navigation)
Broader Term
Navigation (Dcn)
Narrower Terms
Clearances (Navigation) (Dcnuc)
Related Terms (Hierarchical)
Navigation processes (Dcnb)
Navigational aids (Dcns)