Offshore structures Design and construction 26 Hydrodynamics 15 Underwater pipelines 10 Drilling platforms 8 Marine engineering 7 Marine geotechnique 7 Ocean engineering 7 Naval architecture 6 Engineering 5 Fatigue 5 Vibration (Marine engineering) 5 Wave resistance (Hydrodynamics) 5 Fracture mechanics 4 Maintenance and repair 4 Materials 4 Mathematical models 4 Models 4 Safety measures 4 Welded joints 4 Foundations 3 Ocean waves 3 Petroleum pipelines 3 Underwater welding and cutting 3 Abandonment 2 Accidents 2 Anchorage 2 Arctic Regions 2 Automatic control 2 Cold weather conditions 2