{
  "_comment": "S-57 object class catalog — IHO S-57 Ed 3.1. Key: S-57 acronym. geom: A=Area, L=Line, P=Point, C=Collection",
  "COALNE": { "desc": "Coastline",              "geom": ["L"],      "attrs": [] },
  "LNDARE": { "desc": "Land Area",              "geom": ["A"],      "attrs": [] },
  "DEPARE": { "desc": "Depth Area",             "geom": ["A"],      "attrs": ["DRVAL1","DRVAL2"] },
  "DEPCNT": { "desc": "Depth Contour",          "geom": ["L"],      "attrs": ["VALDCO"] },
  "SOUNDG": { "desc": "Sounding",               "geom": ["P"],      "attrs": ["VALSOU","QUASOU","SOUACC"] },
  "DRGARE": { "desc": "Dredged Area",           "geom": ["A"],      "attrs": ["DRVAL1","DRVAL2"] },
  "SBDARE": { "desc": "Seabed Area",            "geom": ["A","P"],  "attrs": ["NATSUR","NATQUA"] },
  "OBSTRN": { "desc": "Obstruction",            "geom": ["A","L","P"], "attrs": ["VALSOU","CATOBS"] },
  "WRECKS": { "desc": "Wreck",                  "geom": ["A","P"],  "attrs": ["VALSOU","CATWRK"] },
  "UWTROC": { "desc": "Underwater / Awash Rock","geom": ["P"],      "attrs": ["VALSOU","WATLEV"] },
  "LIGHTS": { "desc": "Light",                  "geom": ["P"],      "attrs": ["LITCHR","SIGPER","HEIGHT","VALNMR","COLOUR","ORIENT","SIGGRP","SECTR1","SECTR2"] },
  "LNDMRK": { "desc": "Landmark",               "geom": ["A","P"],  "attrs": ["CATLMK","HEIGHT"] },
  "BOYLAT": { "desc": "Lateral Buoy",           "geom": ["P"],      "attrs": ["CATLAM","COLOUR","COLPAT","LITCHR","SIGPER","SIGGRP","VALNMR"] },
  "BOYCAR": { "desc": "Cardinal Buoy",          "geom": ["P"],      "attrs": ["CATCAM","COLOUR","LITCHR","SIGPER","VALNMR"] },
  "BOYISD": { "desc": "Isolated Danger Buoy",  "geom": ["P"],      "attrs": ["COLOUR","LITCHR","SIGPER","SIGGRP","VALNMR"] },
  "BOYSPP": { "desc": "Special Purpose Buoy",  "geom": ["P"],      "attrs": ["CATSPM","COLOUR","LITCHR","SIGPER","VALNMR"] },
  "BOYSPEC":{ "desc": "Special Purpose Buoy (alias→BOYSPP)", "geom": ["P"], "attrs": ["CATSPM","COLOUR","LITCHR","SIGPER","VALNMR"] },
  "BOYSAW": { "desc": "Safe Water Buoy",        "geom": ["P"],      "attrs": ["COLOUR","LITCHR","SIGPER","VALNMR"] },
  "BCNLAT": { "desc": "Lateral Beacon",         "geom": ["P"],      "attrs": ["CATLAM","COLOUR"] },
  "BCNCAR": { "desc": "Cardinal Beacon",        "geom": ["P"],      "attrs": ["CATCAM","COLOUR"] },
  "BCNISD": { "desc": "Isolated Danger Beacon", "geom": ["P"],      "attrs": ["COLOUR"] },
  "BCNSAW": { "desc": "Safe Water Beacon",      "geom": ["P"],      "attrs": ["COLOUR"] },
  "BCNSPP": { "desc": "Special Purpose Beacon", "geom": ["P"],      "attrs": ["CATSPM","COLOUR"] },
  "LITFLT": { "desc": "Light Float",            "geom": ["P"],      "attrs": ["LITCHR","SIGPER","COLOUR"] },
  "LITVES": { "desc": "Light Vessel",           "geom": ["P"],      "attrs": ["LITCHR","SIGPER"] },
  "TOPMAR": { "desc": "Topmark",                "geom": ["P"],      "attrs": ["TOPSHP","COLOUR"] },
  "DAYMAR": { "desc": "Daymark",               "geom": ["P"],      "attrs": ["CATLAM","COLOUR"] },
  "FOGSIG": { "desc": "Fog Signal",            "geom": ["P"],      "attrs": ["CATFOG","SIGPER"] },
  "NAVLNE": { "desc": "Navigation Line",        "geom": ["L"],      "attrs": ["CATNAV"] },
  "LDLINE": { "desc": "Leading Line",           "geom": ["L"],      "attrs": [] },
  "TSSLPT": { "desc": "Traffic Separation Lane Pt", "geom": ["A"], "attrs": [] },
  "TSSRON": { "desc": "Traffic Separation Roundabout", "geom": ["A"], "attrs": [] },
  "TSSBND": { "desc": "Traffic Separation Boundary",  "geom": ["L"], "attrs": [] },
  "TSSCRS": { "desc": "Traffic Separation Crossing",  "geom": ["A"], "attrs": [] },
  "TSELNE": { "desc": "Traffic Separation Line",      "geom": ["L"], "attrs": [] },
  "DWRTCL": { "desc": "Deep Water Route Centre Line", "geom": ["L"], "attrs": [] },
  "DWRTPT": { "desc": "Deep Water Route Part",        "geom": ["A"], "attrs": [] },
  "TWRTPT": { "desc": "Two-way Route Part",    "geom": ["A"],      "attrs": [] },
  "SUBTLN": { "desc": "Submarine Transit Lane","geom": ["A"],      "attrs": [] },
  "ISTZNE": { "desc": "Inshore Traffic Zone",  "geom": ["A"],      "attrs": [] },
  "RECTRC": { "desc": "Recommended Track",     "geom": ["L"],      "attrs": ["CATTRK"] },
  "FERYRT": { "desc": "Ferry Route",           "geom": ["A","L"],  "attrs": ["CATFRY"] },
  "FAIRWY": { "desc": "Fairway",               "geom": ["A"],      "attrs": ["CATFWY"] },
  "ACHARE": { "desc": "Anchorage Area",        "geom": ["A","P"],  "attrs": ["CATACH"] },
  "ACHBRT": { "desc": "Anchor Berth",          "geom": ["A","P"],  "attrs": ["CATACH"] },
  "BERTHS": { "desc": "Berth",                 "geom": ["A","L","P"], "attrs": ["QUAPOS"] },
  "HRBARE": { "desc": "Harbour Area",          "geom": ["A"],      "attrs": ["CATHAF"] },
  "HRBFAC": { "desc": "Harbour Facility",      "geom": ["A","P"],  "attrs": ["CATHAF"] },
  "PILBOP": { "desc": "Pilot Boarding Place",  "geom": ["A","P"],  "attrs": ["CATPIL"] },
  "MORFAC": { "desc": "Mooring / Warping Facility", "geom": ["A","L","P"], "attrs": ["CATMOR"] },
  "DOCARE": { "desc": "Dock Area",             "geom": ["A"],      "attrs": [] },
  "DRYDOC": { "desc": "Dry Dock",              "geom": ["A"],      "attrs": [] },
  "HULKES": { "desc": "Hulk",                  "geom": ["A","P"],  "attrs": ["CATHLK"] },
  "CRANES": { "desc": "Crane",                 "geom": ["A","P"],  "attrs": ["CATCRN","HEIGHT"] },
  "PILPNT": { "desc": "Pile / Bollard",        "geom": ["L","P"],  "attrs": ["CATPLE"] },
  "PONTON": { "desc": "Pontoon",               "geom": ["A","L","P"], "attrs": [] },
  "CBLSUB": { "desc": "Submarine Cable",       "geom": ["A","L"],  "attrs": ["CATCBL"] },
  "CBLOHD": { "desc": "Overhead Cable",        "geom": ["L"],      "attrs": ["CATCBL","VERCLR"] },
  "PIPOHD": { "desc": "Overhead Pipe",         "geom": ["L"],      "attrs": ["CATPIP","VERCLR"] },
  "PIPSOL": { "desc": "Pipeline on Land",      "geom": ["A","L"],  "attrs": ["CATPIP"] },
  "BRIDGE": { "desc": "Bridge",                "geom": ["A","L","P"], "attrs": ["VERCLR","HORACC"] },
  "TUNNEL": { "desc": "Tunnel",               "geom": ["A","L"],  "attrs": ["CATTNL"] },
  "GATCON": { "desc": "Gate / Sluice",         "geom": ["A","L","P"], "attrs": ["CATGAT"] },
  "LOKBSN": { "desc": "Lock Basin",            "geom": ["A"],      "attrs": [] },
  "DMPGRD": { "desc": "Dumping Ground",        "geom": ["A"],      "attrs": ["CATDPG"] },
  "SWPARE": { "desc": "Swept Area",            "geom": ["A"],      "attrs": ["DRVAL1"] },
  "OSPARE": { "desc": "Offshore Production Area","geom": ["A"],    "attrs": [] },
  "OFSPLF": { "desc": "Offshore Platform",     "geom": ["A","P"],  "attrs": ["CATOFP"] },
  "MARCUL": { "desc": "Marine Farm / Culture", "geom": ["A","P"],  "attrs": ["CATMAC"] },
  "PIPARE": { "desc": "Pipeline Area",         "geom": ["A"],      "attrs": ["CATPIP"] },
  "RIVERS": { "desc": "River",                 "geom": ["A","L"],  "attrs": [] },
  "RIVBNK": { "desc": "River Bank",            "geom": ["L"],      "attrs": [] },
  "TIDEWY": { "desc": "Tideway",              "geom": ["A"],      "attrs": [] },
  "WATTUR": { "desc": "Water Turbulence",      "geom": ["P"],      "attrs": [] },
  "BUISGL": { "desc": "Building, Single",      "geom": ["A","P"],  "attrs": [] },
  "BUAARE": { "desc": "Built-up Area",         "geom": ["A"],      "attrs": [] },
  "LAKARE": { "desc": "Lake",                  "geom": ["A"],      "attrs": [] },
  "CANALS": { "desc": "Canal",                 "geom": ["A","L"],  "attrs": [] },
  "ROADWY": { "desc": "Road",                  "geom": ["A","L"],  "attrs": ["CATROD"] },
  "RUNWAY": { "desc": "Runway",               "geom": ["A","L"],  "attrs": [] },
  "SLOTOP": { "desc": "Slope Topline",         "geom": ["L"],      "attrs": [] },
  "SLOGRD": { "desc": "Slope",                 "geom": ["A"],      "attrs": [] },
  "VEGATN": { "desc": "Vegetation",            "geom": ["A","P"],  "attrs": ["CATVEG"] },
  "WEDKLP": { "desc": "Weed / Kelp",           "geom": ["A","P"],  "attrs": ["CATWED"] },
  "LNDRGN": { "desc": "Land Region",           "geom": ["A"],      "attrs": ["CATLND"] },
  "SEAARE": { "desc": "Sea Area / Named Water","geom": ["A","P"],  "attrs": ["CATSEA"] },
  "RESARE": { "desc": "Restricted Area",       "geom": ["A"],      "attrs": ["CATREA"] },
  "PRCARE": { "desc": "Precautionary Area",    "geom": ["A"],      "attrs": [] },
  "SPLARE": { "desc": "Special Purpose Area",  "geom": ["A"],      "attrs": ["CATSPM"] },
  "MIPARE": { "desc": "Military Practice Area","geom": ["A"],      "attrs": [] },
  "CTSARE": { "desc": "Cargo Transhipment Area","geom": ["A"],     "attrs": [] },
  "FSHZNE": { "desc": "Fishery Zone",           "geom": ["A"],      "attrs": [] },
  "FRPARE": { "desc": "Free Port Area",        "geom": ["A"],      "attrs": [] },
  "TESARE": { "desc": "Territorial Sea Area",  "geom": ["A"],      "attrs": [] },
  "EXEZNE": { "desc": "Exclusive Economic Zone","geom": ["A"],     "attrs": [] },
  "ISTZNE": { "desc": "ISPS Zone",             "geom": ["A"],      "attrs": [] },
  "ADDMRN": { "desc": "Admiralty Note",        "geom": ["A","L","P"], "attrs": [] },
  "RDOCAL": { "desc": "Radio Calling-In Point","geom": ["L","P"],  "attrs": [] },
  "RDOSTA": { "desc": "Radio Station",         "geom": ["P"],      "attrs": ["CATROS"] },
  "RADRFL": { "desc": "Radar Reflector",       "geom": ["P"],      "attrs": [] },
  "RADSTA": { "desc": "Radar Station",         "geom": ["P"],      "attrs": ["CATRAS"] },
  "RETRFL": { "desc": "Retro-reflector",        "geom": ["P"],      "attrs": [] },
  "MAGVAR": { "desc": "Magnetic Variation",    "geom": ["P"],      "attrs": ["VALMAG","VALACM"] },
  "MONUMT": { "desc": "Monument",              "geom": ["P"],      "attrs": ["CATLMK","HEIGHT"] },
  "TIDALP": { "desc": "Tidal Stream Panel",    "geom": ["P"],      "attrs": [] },
  "STSLNE": { "desc": "Straight Territorial Sea Baseline", "geom": ["L"], "attrs": [] },
  "M_COVR": { "desc": "Coverage",             "geom": ["A"],      "attrs": ["CATCOV"] },
  "M_NSYS": { "desc": "Navigation System of Marks", "geom": ["A"], "attrs": ["MARSYS"] },
  "M_QUAL": { "desc": "Quality of Data",       "geom": ["A"],      "attrs": ["CATZOC"] },
  "M_ACCY": { "desc": "Accuracy of Data",      "geom": ["A"],      "attrs": [] },
  "M_CSCL": { "desc": "Compilation Scale",     "geom": ["A"],      "attrs": ["CSCALE"] },
  "M_SDAT": { "desc": "Sounding Datum",        "geom": ["A"],      "attrs": ["VERDAT"] },
  "M_HDAT": { "desc": "Horizontal Datum",      "geom": ["A"],      "attrs": ["HORDAT"] },
  "M_UNIT": { "desc": "Units of Measurement",  "geom": ["A"],      "attrs": [] }
}