Page 80 - 4714

being moved, the barge floats on the water's surface; then, when
positioned at the drilling site, the barge is flooded so that it rests on
the ____(8) ooze. Since they often drill in swampy shallow ____(9) ,
drilling people often call inland barges "swamp barges."

8 Scan the text and correct spelling and grammar mistakes.
Besides being good rough-water rigs’, semises are also
capabling of drilling in water thousands of feets deep. While much
semis work on water deapths ranging from 1,000 to 3,500 feets (300
to 1,000 metres), the latest are capable of drilling in water depths of
8,000 feet (2,500 metres). Semis cann dril holes up to 30,000 feet
(10,000 metres) deep. Indeed, semisubmersibleas is among the largest
floating structures ever made. The most big ones soar to under 100
feet (30 metres) tall and their main decks can be almost as big as a
football field-that's 3,000 square yard (2,500 square metres).

79