Jinbei takes the helm of the fleeing Thousand Sunny and saves the whole crew with master-tier helmsmanship — hiding the ship inside the Green Room mid-wave to slip Big Mom’s pursuit — then explicitly spotlights the one crew role the Straw Hats have never filled.
The payoff
Earliest known caller
(Unknown — long-standing fandom expectation since the Fish-Man Island arc.)
Why this matters
Oda’s recruitment pattern repeatedly spotlights an unfilled crew role just before the recruit who will fill it (cook, doctor, musician, shipwright). Jinbei demonstrating peerless helmsmanship while explicitly naming the helmsman as the key to an “invincible” ship is the same chekhov-explicit setup applied to the crew’s last empty seat. Cross-links Straw Hat Recruitment Pattern and the existing Jinbei Becomes The Tenth Straw Hat And Fills The Crews Helmsman Slot.