Table B.16 — ECs with labels beginning with O
Label Groups Reference type Reference Supplemental references
OASIS PHYSIOGRAPHY PR [FACC, Annex A: EC020]  
OBJECT ABSTRACT_OBJECT      
OBJECT_PROPERTY_SET PROPERTY_SET      
OBJECT_SET ABSTRACT_OBJECT      
OBSERVATION_STATION DEVICE_AND_EQUIPMENT IR [FACC, Annex B, BFC:10]  
OBSERVATORY ATMOSPHERE, SPACE      
OCCLUDED_FRONT ATMOSPHERE, DEMARCATION, LOCATION, TEMPERATURE PR [WMO182, O0070, "occluded front"]  
OCCUPATION_ZONE MILITARY_SCIENCE PR [FACC, Annex A: FA170]  
OCEAN HYDROLOGY IR [BOWD, "GLOSSARY OF MARINE NAVIGATION", "ocean", 2] [S32, "ocean"]
OCEAN_BASIN PHYSIOGRAPHY, WATERBODY_FLOOR IR [BOWD, "basin", 1] [S32, "basin" (oceanography)]
OCEAN_FLOOR PHYSIOGRAPHY, WATERBODY_FLOOR      
OCEAN_FLOOR_TOPOGRAPHIC-
_CONFIGURATION		 PHYSIOGRAPHY, WATERBODY_FLOOR IR [SUFN, page 2-1, sub-paragraph I-B; "undersea feature"]  
OFF_ROUTE_BEARING LOCATION, TRNSP PR [FACC, Annex A: GA030]  
OFFSHORE_LOADING_FACILITY HYDROGRAPHIC_TRNSP, TRNSP, USAGE_REGION PR [FACC, Annex A: BB170]  
OFFSHORE_PLATFORM HYDROGRAPHIC_ARTEFACT, HYDROGRAPHIC_INDUSTRY IR [FACC, Annex A: BD111]  
OIL_BARRIER HYDROGRAPHIC_ARTEFACT, WATERBODY_SURFACE IR [S57A, Object: OILBAR]  
OIL_DRILLING_RIG INDUSTRY, INFRASTRUCTURE, SUPPORT_STRUCTURE IR [GOFP, "drilling rig"]  
OPEN_AIR_BATH RECREATION      
OPEN_WATER HYDROLOGY IR [FACC, Annex A: SA010]  
OPERA_HOUSE RECREATION, SHELTER     [SOED, "opera-house"]
ORCHARD AGRICULTURE, LIVING_ORGANISM, PLANT, USAGE_REGION IR [FACC, Annex A: EA040]  
ORE_REFINERY INDUSTRY, LAND_INDUSTRY, USAGE_REGION      
ORNAMENT ABSTRACT_OBJECT      
OUTBUILDING SHELTER     [SOED, "outbuilding"]
OVERFALL_REGION HYDROLOGY, WATERBODY_SURFACE PR [S57A, Attribute, CATWAT:3]  
OVERHEAD_OBSTRUCTION TRNSP PR [FACC, Annex A: AL155]  
OVERPASS LAND_TRNSP, TRNSP      

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