What does the cryptic crossword clue "If moving, they'll receive a tug, right as stern comes adrift (12)" mean?

The wordplay uses an anagram. anagram of RIGHT + AS + STERN = HEARTSTRINGS The answer is HEARTSTRINGS.

If moving, they'll receive a tug, right as stern comes adrift (12)

Times Cryptic #28698 | 3 Down | 2023-09-02 flower