Oceanology: Proceedings of an international conference (Oceanology International ’86), sponsored by the Society for Underwater Technology, and held in Brighton, UK, 4–7 March 1986

Front Matter....Pages i-ix
Front Matter....Pages xi-xi
Modern Navigation and Positioning Techniques....Pages 1-9
Equipment for Differential GPS....Pages 11-20
The Application of Fast Parallel Processing to Enhance the Performance of Navigation Systems....Pages 21-28
Comparison of Dynamic Positioning Systems....Pages 29-36
Front Matter....Pages 37-37
Not Submitted....Pages 39-39
A Review of the ODAP Project: 1980–1985....Pages 41-43
Wave Measurements at North Atlantic Weather stations “India” and “Juliett” in the 1970s (India 2 and Juliett 2)....Pages 45-56
The Advantages and Problems of using Acoustic Doppler Current Profilers in Support of Exploration Drilling on the West Shetland Continental Slope....Pages 57-67
Utilization of “Service ARGOS” for the Remote Monitoring of Oceanographic Data Acquisition Systems....Pages 69-76
Front Matter....Pages 77-77
An Advanced Underwater Towed Vehicle for Oceanographic Measurements....Pages 79-87
Methods for Reducing Ship-induced Attitude Variations of Passive Towed Bodies....Pages 89-97
Long-range Underwater Acoustic Image Transmitting System....Pages 99-104
Operational Aspects of Swimming and Seabed Crawling ROVs for Search and Salvage of Lost Dangerous Cargoes....Pages 105-112
The ARCS and DOLPHIN Untethered Remotely Operated Vehicles....Pages 113-118
Front Matter....Pages 119-119
Activities of the WAM (Wave Modelling) Group....Pages 121-127
On the Application of MIROS Data in Ocean-Wave Modelling....Pages 129-136
Estimating Extreme Still-water Levels and Currents Offshore....Pages 137-152
A Forecasting Method for Typhoon Swell....Pages 153-156
Numerical Wave Models as a Source of Data for Marine Climatology....Pages 157-166
Front Matter....Pages 167-167
A New Opto-electronic Technique for the Measurement of Seabed Sand Transport....Pages 169-174
Front Matter....Pages 167-167
RALPHNET: An Underwater Local Area Network....Pages 175-179
The Benigraph Surveying System: Results of Field Trials....Pages 181-190
Two-ship Undershooting of a Production Platform: The Magnus High-Resolution Seismic Project....Pages 191-202
A Three-component Ocean Bottom Microprocessor-based Seismometer....Pages 203-210
Front Matter....Pages 211-211
The Wavescan Second Generation Directional Wave Buoy: from Design Concepts to Field Testing....Pages 213-215
Field Results Comparing Two Directional Wave Buoys....Pages 217-228
SPEAR-F (a Wave Height Spectrum Buoy via ARGOS) and the Directional Wave Height Measuring Buoys at IFREMER....Pages 229-237
Front Matter....Pages 239-239
Sealion: A Snellius-II Expedition Automatic System for In Situ Geotechnical Testing in Water Depths of 6000 m....Pages 241-246
Effect of Time After Sampling on Laboratory Test Results....Pages 247-248
PUPPI — A free-fall Seabed Piezometer for Geotechnical Studies....Pages 249-258
Conventional Geotechnical Approach to Marine Geotechnical Applications: A Perspective....Pages 259-267
Front Matter....Pages 269-269
A Technique for Estimating Wave-induced Motion Responses of a Crane Barge Semisubmersible....Pages 271-281
Intercomparison Tests Related to the Application of Drift Buoy Systems for Lagrangian Current Measurements in the Yellow Sea....Pages 283-288
Use of Optical-fibre Sensors for Crack Detection in Marine Environments....Pages 289-297
Front Matter....Pages 299-299
The Collection, Interpretation and Presentation of Geotechnical Data for Marine Pipeline Projects....Pages 301-314
Pipeline Inspections: An Overview....Pages 315-331
Analyses of Instability of Seabed and Substrate in the East China Sea....Pages 333-338
Channels in the North Sea: the Nature of a Hazard....Pages 339-351
Pockmarks of the Northwestern Arabian Gulf....Pages 353-367
Front Matter....Pages 369-369
Computer-aided Mapping of Sonar....Pages 371-380
Front Matter....Pages 369-369
SONARMAP: A Convenient Integration of Positioning Information and Seafloor Mapping Sonar Data....Pages 381-389
Not Submitted....Pages 391-391
Multibeam Echo-sounder System for Seabed Mapping....Pages 393-399
The Bathymetric Swathe Sounding System....Pages 401-413
Front Matter....Pages 415-415
High-accuracy Dredging Surveys at the Port of Hamburg....Pages 417-425
Nautical Bottom Research and Survey for Optimization of Maintenance Dredging in Mud Areas....Pages 427-441
A Vessel-borne Gamma-ray Silt-density Gauge for the “in-situ” Examination of Sediments....Pages 443-451
Hovercraft in Surveying....Pages 453-460
Hydrographic Surveying Education in Nigeria....Pages 461-467
Doubtful Hydrographic Data....Pages 469-477
A Seismic Cone Penetrometer for Offshore Applications....Pages 479-486