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• In-Situ Soil Testing OTC 4676 Seabed Investigations Using the Self- Boring Pressuremeter 4677 Three Years' Experience With the- Offshore Self-Boring Pressuremeter PAM 4678 Cyclic Pressuremeter Tests for Cyclic Lateral Loads 4679 Ambient Pressure Sampling System for Deep-Ocean Geotechnical Site Investigations 4680 The Suspension PS Velocities Logging System 4681 Development of In-Situ Measuring Ap- paratus of Geotechnical Elements of Sea Floor (IMAGES) Monday Afternoon 2 to 5 p.m. • Lena Guyed Tower II OTC 4682 Installation of Guying System for Lena Guyed Tower 4683 Installation of Tower, Deck, and Pipe- lines for Lena Guyed Tower 4684 Instrumentation for Monitoring Behav- ior of Lena Guyed Tower 4685 Dynamically Positioned Derrick Barge and Positioning Equipment for Lena Guyed Power Installation • Ice Forces OTC 4686 The Distribution of Ice Pressure Acting on Offshore Pile Structure and the Failure Mechanics of Ice Sheet 4687 Shear Strength of Adfreeze Bond and its Effect on Global Ice Load Applied to Mobile Offshore Drilling Units Un- der Arctic Conditions 4688 Dependence of Crushing Specific En- ergy of Urea Ice on the Aspect Ratio and the Indentor Velocity 4689 The Coefficient of Friction Between Sea Ice and Various Materials Used in Offshore Structures 4690 Ice Forces Exerted on a Conical Struc- ture in the Gulf of Bothnia 4691 Analysis and Design of Ice Wall Fram- ing for a Concrete Arctic Drilling Structure • Marine Geotechnique OTC 4692 Predicting Offshore Soil Conditions 4693 Seismic Response of Offshore Drilling Islands in a Centrifuge Including Soil, Structure Interaction 4694 Cyclic and Rate-of-Loading Design Pa- rameters From Rod Shear Tests 4695 Experimental Study of Effective Stress Response of Sand Under Water Wave Loading 4696 Bottom Preparation for Gravity Struc- tures in Beaufort Sea 4697 Geotechnical Monitoring Systems and Performance in Dynamic Ice Environments • Marine Geology and Seafloor Processes OTC 4698 The Advanced Ocean Drilling Program: The Next Phase in Scientific Ocean Drilling 4699 A Review of Geology and Petroleum Possibilities of Continental Margins of India 4700 A Model for Utilization of Oxygen Iso- topes and Ecologic Logs (Ecologs) in Regional Correlation and Interpreta- tion of Structural History 4701 Bottom Boundary Layer Flow Profiling System 4702 Slumping Due to Hurricane Iwa Along Proposed OTEC Cold-Water Pipe Route, Oahu, HI 4703 Finite-Element Sedimentation Model for Shallow Water • Arctic Operations OTC 4704 Project Management Approach to New Generation Arctic Drilling System 4705 A Deepwater Actively Frozen Seabed March 15, 1984 (DAFS) Drilling/Production Structure for the Beaufort Sea 4706 Design Construction and First Season's Operation of M.V. Kalvik and M.V. Terry Fox/Front Line Icebreakers for the Beaufort Sea 4707 Current and Future Offshore Activities in Canada 4708 Design of Concrete Gravity Structures to Withstand Concentrated Ridge and Floe Impact Loads 4709 The Frequency and Geometry of Ber- ing Sea Ice Ridges From Precision Aerial Photography • Materials Technology OTC 4710 Erosion, Cavitation, and Abrasion Re- sistance of Choke Trim Materials 4711 Development and Testing of New Off- shore Cathodic Protection Criteria 4712 Forged Tubulars for Tension Leg Plat- forms: Material Characteristics and Fracture Resistance in Seawater Environment 4713 Material Properties and Internal Soundness of a Huge Cast-Steel Node Joint 4714 Strength Predictions for Ring-Stiff- ened Cylinders Under Combined Loads (continued on page 78) We're making the best boat shafting longer—to 38 feet Armco AQUAMET Now you can gain all the benefits of Armco® AQUAMET® Boat Shafting in longer length boat shafts. We've installed a new Precision Rotary Forge at our Baltimore, Maryland stainless steel producing facility to provide you with AQUAMET Boat Shafting in lengths up to 38 feet, depending on diameter and surface finish. But that's not all this state-of-the-art equipment otters you. We're able to pro- duce a straighter bar to tighter tolerances as forged. And time to produce shafting is reduced, so you get faster delivery. Let us show you how we can meet your boat shafting needs better with this family of premium-quality Armco AQUAMET Boat Shafting: AQUAMET 17—Outstanding strength, toughness and corrosion resistance for extra-rugged service. AQUAMET 18—Economical strength, corrosion resistance and superior toughness. AQUAMET 19—Corrosion resistance better than AQUAMET 17 and 18. strength and corrosion resistance better than Type 304. AQUAMET 22—Best seawater corrosion resistance plus excellent strength and toughness. Full information-FREE Write us today for your free copy of the Armco AQUAMET Boat Shafting Product Data Bulletin. This 44-page bulletin con- tains complete mechanical and physical properties, corrosion resistance informa- tion, machining guidelines, and design curves. Armco, Stainless Steel Division, Dept. SS-34, Box 600, Middletown, Ohio 45043. armco starless w blttL v DIVISION Circle 132 on Reader Service Card 75