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BS 6349-1-1:2025 - TC Tracked Changes. Maritime works - General. Code of practice for planning and design for the asset lifecycle, 2025
- A-30443085.pdf [Go to Page]
- Foreword
- Section 1: General [Go to Page]
- Introduction
- 1 Scope
- 2 Normative references
- 3 Terms, definitions, symbols and abbreviated terms
- Section 2: Sustainable development and climate change [Go to Page]
- 4 Sustainable development [Go to Page]
- 4.1 Sustainability and environmental management
- 4.2 Carbon management
- 4.3 Climate change [Go to Page]
- 4.3.1 General
- 4.3.2 Adaptation and resilience
- Section 3: Surveys, data collection and studies [Go to Page]
- 5 Bathymetric and topographic surveys [Go to Page]
- 5.1 Survey control [Go to Page]
- 5.1.1 General
- 5.1.2 Vertical control
- 5.1.3 Horizontal control
- 5.2 Bathymetric surveys [Go to Page]
- 5.2.1 General
- 5.2.2 Acoustic systems - echo sounder [Go to Page]
- 5.2.2.1 Calibration and quality control
- 5.2.2.2 Transmission frequency and beam width
- 5.2.3 Acoustic systems - swath acquisition
- 5.2.4 Acoustic systems - side-scan sonar
- 5.2.5 Direct measurement
- 5.2.6 Reduction of soundings
- 5.2.7 Surveys for dredging
- 5.2.8 Surveys for navigation
- 5.2.9 Surveys for coastal bathymetry
- 5.2.10 Non-acoustic bathymetric survey systems
- 5.3 Topographic surveys
- 5.4 Surveys for seabed or subsurface hazards [Go to Page]
- 5.4.1 Seabed conditions
- 5.4.2 Marine magnetometer profiling
- 5.5 Surveys using autonomous and remotely operated vehicles
- 5.6 Digital data acquisition and processing
- 6 Meteorological and oceanographic data acquisition [Go to Page]
- 6.1 General
- 6.2 Survey scope and metocean variability
- 6.3 Meteorological data acquisition [Go to Page]
- 6.3.1 Wind
- 6.3.2 Precipitation
- 6.3.3 Temperature and humidity
- 6.3.4 Visibility
- 6.3.5 Atmospheric pressure
- 6.3.6 Solar radiation
- 6.4 Oceanographic data acquisition [Go to Page]
- 6.4.1 Water levels
- 6.4.2 Currents
- 6.4.3 Waves
- 7 Meteorological effects [Go to Page]
- 7.1 General
- 7.2 Wind
- 7.3 Precipitation
- 7.4 Air temperature and humidity
- 7.5 Visibility
- 7.6 Atmospheric pressure
- 7.7 Solar radiation
- 8 Water levels [Go to Page]
- 8.1 General
- 8.2 Astronomical tides
- 8.3 Storm surge
- 8.4 Seiches
- 8.5 Infragravity waves
- 8.6 Surface water run-off
- 8.7 Long-term sea level trends
- 9 Currents and water movement
- 10 Waves [Go to Page]
- 10.1 General
- 10.2 Spectral description
- 10.3 Non-linear wave theories
- 10.4 Wave forms and motions
- 10.5 Near-shore wave processes
- 10.6 Wave breaking
- 10.7 Wave-current interaction
- 11 Offshore wave climate [Go to Page]
- 11.1 General
- 11.2 Synthetic wave data [Go to Page]
- 11.2.1 Satellite based offshore wave models
- 11.2.2 Empirical wave hindcasts
- 11.3 Measured wave data
- 11.4 Visually observed wave data
- 11.5 Extrapolation of offshore wave data
- 12 Long-period waves [Go to Page]
- 12.1 Infragravity waves
- 12.2 Tsunamis
- 13 Wave transformation and modelling [Go to Page]
- 13.1 General
- 13.2 Coastline and bathymetric features
- 13.3 Channel and estuary effects
- 14 Water quality [Go to Page]
- 14.1 General
- 14.2 Water temperature [Go to Page]
- 14.2.1 General
- 14.2.2 Measurement
- 14.3 Chemical composition
- 14.4 Turbidity
- 14.5 Marine life
- 14.6 Pollution
- 15 Sediment transport [Go to Page]
- 15.1 General
- 15.2 Assessing the present sediment transport regime [Go to Page]
- 15.2.1 General
- 15.2.2 Existing knowledge of sediment movement
- 15.2.3 Bathymetry and topography
- 15.2.4 Local currents and wave conditions
- 15.2.5 Local sediment types
- 15.2.6 Local sediment mobilization
- 15.2.7 Estimating sediment transport rates in the area of interest [Go to Page]
- 15.2.7.1 General
- 15.2.7.2 Estimating transport due to currents [Go to Page]
- 15.2.7.2.1 Desk study
- 15.2.7.2.2 Numerical model study
- 15.2.7.2.3 In-situ measurements
- 15.2.7.3 Estimating transport due to waves [Go to Page]
- 15.2.7.3.1 General
- 15.2.7.3.2 Desk study
- 15.2.7.3.3 Numerical model study
- 15.2.7.3.4 In-situ measurements
- 15.2.7.4 Estimating transport due to waves and currents [Go to Page]
- 15.2.7.4.1 Desk study
- 15.2.7.4.2 Numerical model study
- 15.2.7.4.3 In-situ measurements and sediment sampling
- 15.3 Assessing impacts of works on sediment transport [Go to Page]
- 15.3.1 General [Go to Page]
- 15.3.2 Scour
- Section 4: Metocean design conditions [Go to Page]
- 16 General recommendations on design conditions
- 17 Climate change allowances for design [Go to Page]
- 17.1 Climate change allowances
- 17.2 Changes in storm intensity and frequency
- 18 Water levels and currents for design [Go to Page]
- 18.1 Water levels
- 18.2 Currents and water movement
- 19 Waves conditions for design
- 20 Wave-structure interaction [Go to Page]
- 20.1 Effects of structures on sea states
- 20.2 Harbour response
- 21 Numerical and physical models for design [Go to Page]
- 21.1 Numerical models
- 21.2 Physical models
- 22 Design event probability and extreme values analysis [Go to Page]
- 22.1 Design event probability [Go to Page]
- Figure 1 - Relationship between design working life, return period and probability of a
- 22.2 Independent extremes analysis
- 22.3 Dependent (joint probability) extremes analysis
- Section 5: Functional, operational and safety considerations [Go to Page]
- 23 General functional and operational considerations [Go to Page]
- 23.1 Requirements and design basis
- 23.2 Operational basis of planning and design
- 23.3 Facility operating manual
- 23.4 Planning for execution
- 23.5 Building information model (BIM)
- 24 Safety in planning and design [Go to Page]
- 24.1 Health and safety in design
- 24.2 Hazard identification and risk assessment
- 24.3 Particular requirements of terminals for hazardous products and cargos
- 24.4 Floating LNG terminals with long term moorings
- 25 Control of pollution and discharges to the sea [Go to Page]
- 25.1 Vessel’s waste
- 25.2 Port wastewater and surface run-off
- 26 Port and maritime security
- 27 Lifetime for project appraisal and design [Go to Page]
- 27.1 Operating lifetime
- 27.2 Design life
- 27.3 Design working life of structures
- Table 1 - Indicative design working life categories for maritime works
- 28 Vessel data
- 29 Navigation channels and ship manoeuvring [Go to Page]
- 29.1 General
- 29.2 Planning and design studies
- Table 2 - Typical planning and design activities for channels and manoeuvring areas acco
- 29.3 Vertical channel and manoeuvring area dimensions [Go to Page]
- 29.3.1 General
- Figure 2 - PIANC channel depth factors
- 29.3.2 Operational philosophy considerations
- 29.3.3 Ship factors
- 29.3.4 Net UKC
- 29.3.5 Design philosophy
- 29.4 Horizontal channel and manoeuvring area dimensions [Go to Page]
- 29.4.1 Alignment and width of channels
- Figure 3 - PIANC definition of channel and fairway
- Figure 4 - PIANC definition of elements of channel width
- 29.4.2 Harbour entrances and manoeuvring areas
- 29.4.3 Numerical simulation methods for channel and manoeuvring area spatial design
- 29.4.4 Marine traffic and collision risk assessment
- 30 Berth location, layout and mooring [Go to Page]
- 30.1 Location and layout
- Figure 5 - Considerations for layout and separation of oil and gas tanker berths
- 30.2 Mooring and mooring conditions [Go to Page]
- 30.2.1 General considerations
- 30.2.2 Methods for assessment of acceptable environmental conditions for moored ships
- 31 Operability and weather downtime
- 32 Reliability and performance-based design principles [Go to Page]
- 32.1 Reliability and performance criteria
- 32.2 Structure design to principles of BS EN 1990 [Go to Page]
- 32.2.1 Structural reliability and consequence class
- 32.2.2 Earthquakes and seismic perfomance
- 32.2.3 Design operating conditions and actions
- 32.2.4 Design of breakwaters, revetments and rock structures
- 32.2.5 Hydraulic response and performance requirements
- 32.2.6 Tsunamis
- 33 Maintenance [Go to Page]
- 33.1 Planning for maintenance at the design stage
- 33.2 Maintenance strategies and plans
- 33.3 Inspections and records
- 34 Decommissioning
- Annex A (informative) Organizations with a role in coastal planning, management an
- Annex B (informative) Linear (“first order” or “sinusoidal”) wave theory [Go to Page]
- Figure B.1 - Linear wave theory - definition diagram
- Table B.1 - Linear wave theory useful equations
- Annex C (informative) Near-shore wave processes [Go to Page]
- C.1 General
- Figure C.1 - Wave shoaling and estimation of wave height in the surf zone
- C.2 Refraction and shoaling
- Figure C.2 - Schematic diagram of wave refraction
- C.3 Bottom friction
- Figure C.3 - Wave height reduction factor for bottom friction
- C.4 Wave breaking
- Figure C.4 - Breaker types
- C.5 Wave direction for a flat seabed [Go to Page]
- C.5.1 General
- C.5.2 Diffraction of a random sea
- C.5.3 Currents induced by wave diffraction
- Annex D (informative) Wave prediction using charts [Go to Page]
- D.1 General
- D.2 Wind speed and duration
- D.3 Fetch length
- D.4 Prediction by significant wave charts
- Figure D.1 - Significant wave prediction chart - Fetch lengths up to 1 500 km
- Figure D.2 - Significant wave prediction chart - Fetch lengths from 200 km to 20 000 km
- D.5 Prediction by wave spectra
- Figure D.3 - JONSWAP wave spectrum
- Figure D.4 - Pierson-Moskowitz wave spectrum
- Figure D.5 - Significant wave height and peak period for wave spectra
- Annex E (informative) Independent extreme values analysis [Go to Page]
- E.1 Reliability of extremes analysis
- E.2 Probability density functions
- E.3 Extrapolation of wave periods
- Annex F (informative) Metocean data acquisition [Go to Page]
- F.1 General considerations [Go to Page]
- F.1.1 Rapidly varying conditions
- F.1.2 Infrequent conditions
- F.1.3 Climate change (trend and variability)
- F.1.4 Parameters impacted by proximity to the coast, island and shoals
- F.2 Meteorological data acquisition [Go to Page]
- F.2.1 Wind
- F.2.2 Precipitation
- F.2.3 Air temperature and humidity
- F.2.4 Visibility
- F.2.5 Atmospheric pressure
- F.2.6 Solar radiation and hours of sunshine [Go to Page]
- F.2.6.1 Solar radiation measurement
- F.3 Oceanographic data acquisition [Go to Page]
- F.3.1 Water levels [Go to Page]
- F.3.1.1 Water-level measurements
- F.3.1.2 Tidal analysis
- F.3.2 Currents [Go to Page]
- F.3.2.1 Measurement of currents
- F.3.2.2 Current meter observations
- F.3.2.3 Float tracking
- F.3.2.4 Measurement of diffusion
- F.3.2.5 Presentation and analysis of field data
- F.3.3 Waves - Wave recording equipment [Go to Page]
- F.3.3.1 Surface systems
- F.3.3.2 Sub-surface systems
- F.3.3.3 Above-surface systems
- F.3.3.4 Directional systems
- Annex G (informative) Sediment transport data acquisition
- Annex H (informative) Key dimensions of ships for preliminary design purposes [Go to Page]
- H.1 Vessel dimensions
- Figure H.1 - Dimensions for LNG vessels related to gas capacity
- Figure H.2 - Dimensions for LPG vessels related to gas capacity
- Figure H.3 - Dimensions for liquid bulk vessels related to DWT
- Figure H.4 - Dimensions for liquid bulk (below 50,000 DWT) vessels related to DWT
- Figure H.5 - Dimensions for dry bulk vessels related to DWT
- Figure H.6 - Dimensions for dry bulk (below 50,000 DWT) vessels related to DWT
- Figure H.7 - Dimensions for container vessels related to TEU
- Figure H.8 - Dimensions for general cargo vessels related to DWT
- Figure H.9 - Dimensions for Ro-Ro-ferry vessels related to Ro-Ro lane length
- Figure H.10 - Dimensions for passenger and cruise vessels over 1 000 GT related to pa
- H.2 Estimation of displacement and block coefficient
- Table H.1 - Estimates of vessel displacement and block coefficient from deadweight
- Annex I (informative) Guidance on acceptable movement criteria for moored vessels [Go to Page]
- I.1 General
- I.2 Small craft up to 20 m in length
- Table I.1 - Wave criteria from small craft
- Table I.2 - Wave climate criteria for small craft in extreme conditions
- I.3 Fishing vessels
- Table I.3 - Motion limits for cargo handling on moored fishing vessels with an LOA rang
- I.4 Maritime support vessels
- Table I.4 - Motion criteria for maritime support vessels
- I.5 Other vessels larger than 1 000 DWT
- Table I.5 - Recommended maximum velocity limits 1 000 DWT to 8 000 DWT
- Table I.6 - Guidance on maximum motion criteria for safe working conditions
- Table I.7 - Recommended motion criteria for vehicle ramp operations of Ro-Ro vessels
- Table I.8 - Recommended motion criteria for ferry, RoPax and cruise vessel SPBBs
- Table I.9 - Guidance on maximum allowable significant motion amplitude conditions for
- Bibliography [Go to Page]