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1981 MARINE INDUSTRY FORECAST and YEARBOOK THE OFFSHORE FLEET 1 OFFSHORE DRILLING RIGS is r U.S. BARGE AND TOWING OPERATIONS INLAND/COASTAL- SMALLER/MEDIUM YARDS Pi i U.S. NAVY iJL U.S. MERCHANT SHIPBUILDING * A sTfita. pi ««Si#18 i i i • \ WORLD SHIPBUILDING
