EPSG:5745 — North Rona height

VERTCRS[
    "North Rona height",
    VDATUM["North Rona",ID["EPSG",5143]],
    CS[vertical,1,ID["EPSG",6499]],
    AXIS["Gravity-related height (H)",up],
    LENGTHUNIT["metre",1,ID["EPSG",9001]],
    GEOIDMODEL["ETRS89 to North Rona height (1)",ID["EPSG",10030]],
    ID["EPSG",5745]
]

+vunits=m +no_defs +type=crs

proj4.defs("EPSG:5745", "+vunits=m +no_defs +type=crs");

{
  "type": "CoordinateReferenceSystem",
  "code": 5745,
  "name": "North Rona height",
  "kind": "vertical",
  "area": "UK - North Rona onshore",
  "unit": "metre",
  "bbox": [
    59.07,
    -5.92,
    59.19,
    -5.73
  ],
  "proj4": "+vunits=m +no_defs +type=crs"
}

INSERT INTO spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext)
VALUES (5745, 'EPSG', 5745, '+vunits=m +no_defs +type=crs', 'VERT_CS["North Rona height",VERT_DATUM["North Rona",2005,AUTHORITY["EPSG","5143"]],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AXIS["Gravity-related height",UP],AUTHORITY["EPSG","5745"]]');

PROJECTION
  "+vunits=m"
  "+no_defs"
  "+type=crs"
END

5745=VERT_CS["North Rona height",VERT_DATUM["North Rona",2005,AUTHORITY["EPSG","5143"]],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AXIS["Gravity-related height",UP],AUTHORITY["EPSG","5745"]]