How do I solve 21 down in Times Cryptic 29453?

Question

Accepted Answer

21 down reads "Sailor in the doldrums relatively OK for tobacco?" (3,3 letters); the answer is LOW TAR. It's a charade: the answer breaks into parts in clue order, each part clued by a word or short phrase. No indicators needed; watch for standard abbreviations (RA = artist, US = American, IN = at home) and short synonyms. The full step-by-step breakdown is on this page.

Sailor in the doldrums relatively OK for tobacco? (3,3)

21D — Sailor in the doldrums relatively OK for tobacco? (3,3) — LOW TAR