From Acts 27:29, 30, 40, it would appear that the Roman vessels
carried several anchors, which were attached to the stern as
well as to the prow. The Roman anchor, like the modern one, had
two teeth or flukes. In Heb. 6:19 the word is used
metaphorically for that which supports or keeps one steadfast in
the time of trial or of doubt. It is an emblem of hope.

"If you fear,
Put all your trust in God: that anchor holds."