EPSG:5744 — Sule Skerry height

VERTCRS[
    "Sule Skerry height",
    VDATUM["Sule Skerry",ID["EPSG",5142]],
    CS[vertical,1,ID["EPSG",6499]],
    AXIS["Gravity-related height (H)",up],
    LENGTHUNIT["metre",1,ID["EPSG",9001]],
    GEOIDMODEL["ETRS89 to Sule Skerry height (1)",ID["EPSG",10034]],
    ID["EPSG",5744]
]

+vunits=m +no_defs +type=crs

proj4.defs("EPSG:5744", "+vunits=m +no_defs +type=crs");

{
  "type": "CoordinateReferenceSystem",
  "code": 5744,
  "name": "Sule Skerry height",
  "kind": "vertical",
  "area": "UK - Sule Skerry onshore",
  "unit": "metre",
  "bbox": [
    59.05,
    -4.5,
    59.13,
    -4.3
  ],
  "proj4": "+vunits=m +no_defs +type=crs"
}

INSERT INTO spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext)
VALUES (5744, 'EPSG', 5744, '+vunits=m +no_defs +type=crs', 'VERT_CS["Sule Skerry height",VERT_DATUM["Sule Skerry",2005,AUTHORITY["EPSG","5142"]],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AXIS["Gravity-related height",UP],AUTHORITY["EPSG","5744"]]');

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

5744=VERT_CS["Sule Skerry height",VERT_DATUM["Sule Skerry",2005,AUTHORITY["EPSG","5142"]],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AXIS["Gravity-related height",UP],AUTHORITY["EPSG","5744"]]