hydrographic reconnaissance

hydrographic reconnaissance

Reconnaissance of an area of water to determine depths, beach gradients, the nature of the bottom, and the location of coral reefs, rocks, shoals, and manmade obstacles.
References in periodicals archive ?
Underwater robotic systems are also a part of the family, but because of budgetary constraints and war priorities, the semi-autonomous hydrographic reconnaissance vehicle and others have not been maturing as quickly as the airborne platforms.
Once in place, SEALs conducted strategic reconnaissance, early warning patrols, hydrographic reconnaissance, direct action, mine hunting, and combat search and rescue.
The Navy SEALs, meanwhile, have fielded a modified version of the REMUS, known as the semi-autonomous hydrographic reconnaissance vehicle.

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