2026-09-28T10:20:30+01:00https://marinefinds.org.uk/datalabs/terminology/object/format/jsonhttps://marinefinds.org.uk/datalabs/terminology/object/format/xmlhttps://marinefinds.org.uk/datalabs/terminology/object3494138333THREE CENTRED ARCHYA depressed arch formed around three arcs: two struck from the springing line with one centrally placed arc struck from below it.546P