INSERT into spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext) values (5867, 'EPSG', 5867, '+vunits=m +no_defs +type=crs', 'VERT_CS["MLW depth",VERT_DATUM["Mean Low Water",2005,AUTHORITY["EPSG","1091"]],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AXIS["Depth",DOWN],AUTHORITY["EPSG","5867"]]');