What does the cryptic crossword clue "Boatman’s transport’s popular (4)" mean?

The wordplay uses a charade (building blocks). S (synonym="from the end of "Boatman's"") + HIP (synonym=""popular"") = SHIP The answer is SHIP.

Boatman’s transport’s popular (4)

Guardian Cryptic #29418 | 21 Down | 2024-06-25 flower