What does the cryptic crossword clue "Set about tanker due for dismantling (9)" mean?

The definition is "Set about". The wordplay uses an anagram. anagram of TANKER + DUE = UNDERTAKE; definition: "Set about" The answer is UNDERTAKE.

Set about tanker due for dismantling (9)

Independent Cryptic #11979 | 3 Down | 2025-03-01 flower