S
SA Standards Australia www.website (knowned as Standards Association of Australia until 1988)
SAC  Special Areas of Conservation (for natural habitats and of wild fauna and flora; European Directive)
SACEP  South Asia Co-operative Environment Programme www.website
SACS Structural Analysis Computer System
SADC  Southern Africa Development Community www.website
SADIE Safety Alert Data Information Exchange (UK) www.website
SAF Safety
SAFE Safety Analysis Function Evaluation
  Security And Fuel Efficiency (US 2007 Energy Act)
SAFEHULL ABS software for hull condition analysis
SAIHC Southern Africa and Islands Hydrographic Commission www.webpage 
SALS  Single Anchor Leg System 
SAM  Subsea Accumulator Module
  Sustainability Assessment Model 
  Subsea Accoustic Monotoring 
SAP  Sub sea Accumulator Package
SARSAT  Search and Rescue Satellite Aided Tracking
SART  Search and Rescue Radar Transponder
SASO Saudi Arabian Standards Organization www.website
SAT  Safety Analysis Table
Site Acceptance Test
  Saturation (diving)
SATP  Site Acceptance Test Pressure
SAV Smart Vaporisation 
SAW  Submerged Arc Welded
SAWL  Submerged Arc Welded
SB Screwed Bonnet
SBL Short Base Line (acoustic positioning system)
SBM  Single Buoy Mooring 
  Synthetic Based (drilling) Mud
SBP  Sub Bottom Profiler
SBT  Segregated Ballast Tank
SC Safety Concept
SCADA  Supervisory Control And Data Acquisition
SCALOP Standing Committee on Antarctic Logistics and Operations  www.webpage
SCAR Scientific Committee on Antarctic Research  www.website
SCC  Stress Corrosion Cracking
Surface Compression Chamber (diving)
SCDB   GEBCO Sub-Committee on Digital Bathymetry www.webpage
SCF  Stress Concentration Factor
SCM  Sub sea Control Module
SCMH  Standard Cubic Meter per Hour
SCOPIC  Special Compensation Protection and Indemnity Clause (to LOF)
SCORE  Summary of Current Offshore Rig Economics 
SCP System Checkout Procedure
  Sustained Casing Pressure 
SCPC Single Channel Per Carrier
SCR  Steel Catenary Riser
SCSSV/
SCSSSV
Surface Control Sub-surface Safety Valve
SCU  Sub sea Control Unit
  Surface Control Unit
  Satellite Control Unit
  Salvage Control Unit (UK Coastguards Agency - MCA)
SCUBA  Self Contained Underwater Breathing Apparatus
SCUFN  GEBCO Sub-Committee on Undersea Feature Names www.webpage  
SCV Submerged Combustion Vaporizer 
SD  Shut Down
  Standard Drawings
  Safety Device
SDA  (French for) Direct Inward Dialling
SDU  Subsea Distribution Unit 
SEAM  Support for Environmental Assessment and Management (Egyptian Programm of the Ministry of Environment) 
SEC Securities and Exchange Commission (stock markets) US website
SEC Case  The method for calculating future net revenues from proved reserves as established by the SEC
SEC x% or SEC@x% : future net revenue anticipated from proved reserves using the SEC Case, discounted at x %
SECAM Système Electronique Couleur Avec Mémoire (French colour video coding)
SEEEC  Sea Empress Environmental Evaluation Committee www.website
SEER

Strategic European Energy Review (a European Commission) 

SEG  Society of Exploration Geophysicists
SEG-D  Society of Exploration Geophysicists format D
SEG-Y  Society of Exploration Geophysicists format Y
SEPHC South-East Pacific Hydrographic Commission www.webpage
SEI Syndicat d'Emballage Industriel 
SEL  Safety, Environment & Legislation 
SEM  Sub sea Electronic Module
sep  Separator
SEPA Southeastern Power Administration (USA)
SEPM Society for Sedimentary Geology www.website
SES  Standards Engineering Society www.website
SET  Solid Expandable Tubular
SDL  Supplier Document List 
   
SDR  Sub Distribution Room
SDU  Sub sea Distribution Unit
SDV  Shut Down Valve
SERC Southeastern Electric Reliability Council (NERC Region, USA)
SFAC  Standard Final Acceptance Certificate
SFIV Surface controlled Formation Isolation Valve 
SFT  Norwegian State Pollution Control Authority
S-FTP  Shielded Foiled Twisted Pair
SFV Straight Fixed Variable
SG  Specific Gravity 
SGD  Signal Generator / Detector 
SHARP  Sustainable Hydrocarbons Additional Recovery Programme (from UK DTI, changed to OG-MRP)
SHCMOEI Safety, Health Commission for the Mining & Other Extractive Industries (European Union website
SHDP  Slim hole drill pipe
SHE  Safety, Health and Environment 
SHIPRIGHT  Lloyds Register software for hull condition analysis 
SHOM  Lloyds Register Services Hydrograhiques et Océanographiques de la Marine
SHZ Safe Handling Zone
SI  Safety Integrity 
  System International (units) 
  Scale Inhibitor 
  Shut In
SIC  Silicon Carbon 
SICP  Shut-In Casing Pressure 
  Standard Industrial Classification
SIDA  Swedish International Development Agency
SIL  Safety Integrity Level 
SILS Subsea Intervention Lubricator System 
SIMOPS  Simultaneous Operations 
SINTEF  Foundation for Scientific and Industrial Research at the Norwegian Institute of Technology www.website 
SIO Scripps Institution of Oceanography (Calif., USA) www.website  
  Ship In Operations (DNV) 
SIOR  Sub sea Improved Oil Recovery 
SIPS  Seismic Integrated Positioning System (used to monitor seismic streamer positioning) (an acoustic system) 
SIR  Surface Integrity & Repair 
SIRE  OCIMF questionnaire for vessels 
SIRIM  Standards and Industrial Research Institute of Malaysia www.website
SIS  Safety Instrumented System 
  Schlumberger Information Systems (company)
SISIR Singapore Institute of Standards & Industrial Research  
SIT Site Integration Test
  Silicon Intensified Target 
SIV  Sub-sea Isolation Valve 
SIWHP  Shut-In Well Head Pressure 
SKL Skew Load Distribution 
SLAR  Sideways Looking Airborne Radar
SLOR  Single Line Offset Riser 
slur  Slurry
SLS Submerged Loading System
SLV  Service Line Valve
SMACNA  Sheet Metal and Air Conditioning Contractor's National Association www.website 
SMAW  Shielded Metal Arc Welding 
SME  Society of Manufacturing Engineers (USA) www.website 
SMLS Seamless 
SMPL  Swamp and Marsh area Pipe Line 
SMPS Switch Mode Power Supply
SMS  Stress Monitoring System 
SMV  Standardised Measure Value
SMYS  Specified Minimum Yield Stress (Strength) 
SNAME  Society of Naval Architects and Marine Engineers (USA) www.website 
SNETI  Syndicat National des Entrepreneurs de Travaux Immergés (French) 
SNPWG  CHRIS Standardisation of Nautical Publications Working Group www.webpage
SNR  Signal to Noise Ratio 
  Solid Oxyde Fuel Cell
SNS  Southern North Sea 
SNZ  Standards New Zealand www.website 
SOHIC  Stress Oriented Hydrogen Induced Cracking 
SOLAS  Safety Of Life At Sea (international convention) www.website
SONS Spills of National Significance (USA)
SOP  Settling Out Pressure 
  Standard Of Practice 
SOPAC South Pacific Applied Geoscience Commission www.website 
SOPEP Shipboard Oil Pollution Emergency Plans
SOR  Statement Of Requirement 
SOW  Scope Of Work 
SP  Sprinkler 
  Standard Practice 
  Spare 
SPA  Service Pressure Control Unit 
  Special Protection Areas
SPAR Deep draft cylindrical and vertical production and storage floating structure (name coming from spar buoy, navigation buoy resembling a vertical log)
SPB  Split Body 
SPC  South Pacific Commission www.website 
  Statistical Processes Control
SPCS  Sub sea Production Control System 
SPCU  Sub sea Production Control Unit
  Sub sea Power and Communication Unit  
SPD  Surge Protective Device 
SP3D  Smart Plant 3D (3 dimensions) 
SPDT  Single Pole Double Throw 
SPE Society of Petroleum Engineers www.website
SPKV  Surface Production Kill Valve 
SPM  Single point mooring
SPMEESA  Strategy and Action Plan for the Protection of the Marine Environment in the Coastal States of Eastern and Southern Africa (project)
SPMV  Surface Production Master Valve  
SPP Southwest Power Pool (NERC Region, USA)
  Small Power Producer 
SPREP  South Pacific Regional Environment Programme www.website
SPS Sub-sea Production System / Station 
  Sandwich Plate System
  Special Purpose Ship 
SPSL Short-Period SuperLattices  
SPT  Standard Penetration Test  
SPWG IHO Strategic Planning Working Group www.webpage  
SPWV  Surface Production Wing Valve 
   
SR Self reinforced  
SRA  Structure Reliability Analysis 
SRAC Short Run Avoided Cost
SRC  Sulphate Resistant Cement 
  Shoreline Response Centre
SRD  Soil Resistance to Driving  
SRPC  Sulphate Resistant Portland Cement 
SRI  Southwest Research Institute 
SRP  Surface Roughness Parameter 
SS  Stainless Steel
  Steam Supply 
SSB  Select Sub-base 
  Single-Side Band 
  SubSea Boosting 
SSBL  Super Short Base Line (acoustic positioning system) 
SSC  Sulphide Stress Cracking 
SSCSV Sub-Surface Controlled Safety Valve  
SSFC Shippingport Spent Fuel Canister www.description
  Single Switch Forward Converter  (welding power supply)
SSFCAW   SSFC Arc Welding 
SSIV  Sub-sea Safety Isolation Valve 
SSO  Ship Safety Officer 
SSR  Secondary Surveillance Radar 
SSS  Safety Shutdown System 
  Side Scan Sonar  
SSSI  Site of Special Scientific Interest (UK) 
SSSL  Supplementary Seismic Survey Licence
SSSV  Sub Surface Safety Valve 
SSTT  Sub Sea Test Tree 
SSTLV  Sub Sea Test Tree Lower Valve 
SSTTUV  Sub Sea Test Tree Upper Valve 
SSV  Surface Safety Valve 
ST  Service Temperature  
STCW  Standards of Training, Certification and Watchkeeping for Seafarers (International Convention, www.website)
STD Standard 
STEL  Short Time Exposure Limit 
STPP  Single-Trip Perf / Pack
STI  Steel Tank Institute (USA) www.website 
STL  Submerged Turret Loading 
STOp Scientific and Technical Operational 
STP  Submerged Turret Production 
STS  Static Test Sheet 
Ship To Shore
  Ship To Ship 
STT  Surface Test Tree 
STW  Standard of Training and Watchkeeping (IMO) 
SU  Start-Up 
  Service Umbilical 
SUPSALV  United States Navy Supervisor of Salvage 
SURF  Subsea Umbilicals Riser Flowlines
SUT Society for Underwater Technology www.website
SVP  Saturated Vapour Pressure 
SW  Sea Water 
  Socket Welding 
SWC  Step Wise Cracking  
SWD  Salt Water Disposal
SWF  Shallow Water Flow 
SWL  Sea Water Line 
  Safe Working Load 
SWPA Southwestern Power Administration (USA)
SWPGB  Single Well or cluster Production Guide Base 
SWPHC South-West Pacific Hydrographic Commission www.webpage  
SWRI  Southwest Research Institute, San Antonio, Texas,USA 
SW/SI  Single Wall / Single Image (radiography technique) 
SWT  Shallow Water Test 
SWU  Salt Water Unit
SYMO  Soft Yoke Mooring and Offloading (TM) 
SYN  Synthesis LED