B
B2B Business to Business
B2C Business to Consumer
B2E Business to Employee
BAM German Federal Institute for Materials Research and Testing
BASIS  Biofilm Adhesion on Substrates in Sea water 
BAT Best Available Technology
  Bimodal AcousTic (Trade Mark) sensor 
BATHYNET Bathymetry Network
BB Bolted Bonnet
bbl One barrel of oil; 1 barrel = 35 Imperial gallons (approx.), or 42 US gallons or 159 litres (approx.).
7.5 barrels = 1 tonne (approx.); 6.29 barrels = 1 cubic metre. 
bbbl  Billion Barrels 
bboe  Billion Barrels of Oil Equivalent
BC Bolted Cover
  Barrels of Condensate 
  Bottom Choke 
  Code of Safe Practice for Solid Bulk Cargoes 
BCD  Barrels per Calendar Day 
BCF  BromoChlorodiFluoromethane (Halon 1211 Fire Retardant) 
bcf  Billion cubic feet; 1 bcf = 0.83 million tonnes of oil equivalent.
bcfd  Billion cubic feet per day 
BCM Billion cubic metres (1 cubic metre = 35.31 cubic feet). 
bcpmm  Barrels of Condensate Per Million (cubic feet) 
BD  Business Development
  Basis of Design 
  Blow Down
BDI  Baltic Dry Index 
BDS Bell Diving Supervisor
bdo  Barrels of Diesel Oil 
bdpd  Barrels of Distillate Per Day 
BDV Blow Down Valve
BE Beveled End
BEP Best Efficiency Point
BER Bit Error Rate
BF  Blind Flange 
BFI  Baltic Freight Index   (see BDI )
BFW  Boiler Feed Water 
BG  Below Grade 
BH  Bottom Hole 
BHA Bottom Hole Assembly
BHN Brinell hardness (steel hardness unit) see www.Brinell Hardness Test
BHO  Bâtiment Hydro-Océanographique (french)
BHOR  Bundle Hybrid Offset Riser
BHP Bottom Hole Pressure
  Bore Hole Pressure 
BIBS Built-In Breathing System
BIMCO Baltic and International Maritime Council 
BIMCOSALE The Bimco standard form of bill of sale 
BIT Bureau for International research and Technology (Austrian)
  Build Integration and Test 
BL Battery Limit
BLEVE Boiling Liquid Expanding Vapour Explosion
BLM   Bureau of Land Management (USA Gov. Agency)&
BM Base Metal
BMV Bleed Monitoring Valve
BNWAS  Bridge National Watch Alarm System (shipping) 
BNS  Basic North Sea (training) 
BOB Braid Optimised for Bending
BOD Barrels of Oil per Day
  Biological oxygen Demand 
BODC British Oceanographic Data Centre (UK)  webs ite 
BOE  Barrels of oil equivalent : method of equating oil, gas and natural gas liquids. Gas is converted to oil based on its relative energy content at the rate of six Mcf of gas to one barrel of oil. NGLs are converted based upon volume: one barrel of natural gas liquids equals one barrel of oil
boepd  Barrels of oil equivalent per day 
BOP Blow Out Preventer
BOPD Barrels of Oil Per Day 
BOSCA  British Oil Spill Control Association
BOSIET  Basic Offshore Survival Induction and Emergency Training
BOSVA British Offshore Support Vessel Owners Association 
BP Bollard Pull
BPD Barrels Per Day
Back Pressure Differential
BPEO Best Practicable Environment Option 
BPH  Barrels Per Hour
BPI Baltic Panamax Index
BPV  Back Pressure Valve 
BRGM  French Bureau of Geological and Mining Researchs
BRINDEX  British Independent oil Exploration companies association 
BROA British Rig Owners Association
BRS Bottom Simulating Reflector
  Bulgarian Register of Shipping  
BRT Below Rotary Table 
BS British Standard
  Breaking Strength
  Bottom Sediment 
BSEP  Black Sea Environment Programme website 
BSH Bundesamt für Seeschiffahrt und Hydrographie website 
BSHC Baltic Sea Hydrographic Commission website
BSI  British Standard Institution website
BSR  Bottom Simulating Reflector 
  Bactéries Sulfato Réductrices (french) 
BS-SAP  Black Sea Strategic Action Plan website
BST  British Summer Time
BSW Barrels salt water 
BS&W Basic sediment & water
BTEX  Benzene, Toluene, Ethylbenzene and Xylene 
BTI British Trade International 
BTM Bromotrifluoromethane = Halon 1301 (flood systems) 
  Buoyant Turret Mooring
BTU British Thermal Unit (The amount of heat required to raise one pound of water one degree Farenheit (at or around 39.2 degrees F))
BTX Benzene Toluene Xylene
BV Bureau Veritas : website
BVS  Block Valve Station 
BW But Weld(ing)
B&W Black and White
BWG Birmingham Wire Gauge
BWPD  Barrels of Water Per Day