They transform a stark, echoing area into a warm quiet congenial work place.

The tables seemed to have been deliberately widely spaced, leaving echoing areas of empty floor between them.

Owners and operators of craft vessels of less than 15m in length should fit reflectors with the greatest echoing area practical.

Mariners are cautioned not to deviate from these plans as the design and fitting of these reflectors have been tested to give the maximum echoing area.

Measurements of the Radar Echoing Area of the Vulcan by the Optical Simulation Method.

"If a radar reflector is octahedral it must have a minimum diagonal measurement of 12 inches, or if not octahedral must have a documented "equivalent echoing area" of not less than 108 square feet (10 meters).