This root form (lemma) is used in 2 different forms in the NT: ἀγκύρας (AFP), ἄγκυραν (AFS).
It is glossed in 2 different ways: ‘an anchor’, ‘anchors’.
OET ACTS 27:29 Greek word=ἀγκύρας (agkuras) Morphology=AFP English gloss=‘anchors’ SR GNT ACTS 27:29 word 18
OET ACTS 27:30 Greek word=ἀγκύρας (agkuras) Morphology=AFP English gloss=‘anchors’ SR GNT ACTS 27:30 word 23
OET ACTS 27:40 Greek word=ἀγκύρας (agkuras) Morphology=AFP English gloss=‘anchors’ SR GNT ACTS 27:40 word 3
OET HEB 6:19 Greek word=ἄγκυραν (agkuran) Morphology=AFS English gloss=‘an anchor’ SR GNT HEB 6:19 word 3