EPSG:5446 DEPRECATED

COORDINATEOPERATION["Baltic depth to AIOC95 height (1)",
    VERSION["AIOC95-Aze"],
    SOURCECRS[
        VERTCRS["Baltic 1977 depth",
            VDATUM["Baltic 1977"],
            CS[vertical,1],
                AXIS["depth (D)",down,
                    LENGTHUNIT["metre",1]],
            ID["EPSG",5612]]],
    TARGETCRS[
        VERTCRS["AIOC95 height",
            VDATUM["AIOC 1995"],
            CS[vertical,1],
                AXIS["gravity-related height (H)",up,
                    LENGTHUNIT["metre",1]],
            ID["EPSG",5797]]],
    METHOD["Vertical Offset",
        ID["EPSG",9616]],
    PARAMETER["Vertical Offset",26.3,
        LENGTHUNIT["metre",1],
        ID["EPSG",8603]],
    OPERATIONACCURACY[0.0],
    USAGE[
        SCOPE["Change of height to a different vertical reference surface."],
        AREA["Azerbaijan - Caspian offshore and onshore Sangachal terminal."],
        BBOX[37.89,48.66,42.59,51.73]],
    ID["EPSG",5446],
    REMARK["Baltic datum plane is 26.3m above AIOC95 datum plane."]]

proj4.defs("EPSG:5446","+proj=geogoffset +dh=26.3");

{
    "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json",
    "type": "Transformation",
    "name": "Baltic depth to AIOC95 height (1)",
    "source_crs": {
        "type": "VerticalCRS",
        "name": "Baltic 1977 depth",
        "datum": {
            "type": "VerticalReferenceFrame",
            "name": "Baltic 1977"
        },
        "coordinate_system": {
            "subtype": "vertical",
            "axis": [
                {
                    "name": "Depth",
                    "abbreviation": "D",
                    "direction": "down",
                    "unit": "metre"
                }
            ]
        },
        "id": {
            "authority": "EPSG",
            "code": 5612
        }
    },
    "target_crs": {
        "type": "VerticalCRS",
        "name": "AIOC95 height",
        "datum": {
            "type": "VerticalReferenceFrame",
            "name": "AIOC 1995"
        },
        "coordinate_system": {
            "subtype": "vertical",
            "axis": [
                {
                    "name": "Gravity-related height",
                    "abbreviation": "H",
                    "direction": "up",
                    "unit": "metre"
                }
            ]
        },
        "id": {
            "authority": "EPSG",
            "code": 5797
        }
    },
    "method": {
        "name": "Vertical Offset",
        "id": {
            "authority": "EPSG",
            "code": 9616
        }
    },
    "parameters": [
        {
            "name": "Vertical Offset",
            "value": 26.3,
            "unit": "metre",
            "id": {
                "authority": "EPSG",
                "code": 8603
            }
        }
    ],
    "accuracy": "0.0",
    "scope": "Change of height to a different vertical reference surface.",
    "area": "Azerbaijan - Caspian offshore and onshore Sangachal terminal.",
    "bbox": {
        "south_latitude": 37.89,
        "west_longitude": 48.66,
        "north_latitude": 42.59,
        "east_longitude": 51.73
    },
    "id": {
        "authority": "EPSG",
        "code": 5446
    },
    "remarks": "Baltic datum plane is 26.3m above AIOC95 datum plane."
}

<?xml version="1.0" encoding="utf-8"?>
<Map srs="+proj=geogoffset +dh=26.3">
	<Layer srs="+proj=geogoffset +dh=26.3">
	</Layer>
</Map>

INSERT into spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext) values ( 5446, 'EPSG', 5446, '+proj=geogoffset +dh=26.3', 'None');