The depletion of oil and resulting shift to renewable energy brought an end both to giant tankers and to the pervasive sense of haste characteristic of the oil centuries. Any crew position would be fine, but captains have more fun. Actually one is elected. There are thousands of ships out there, all different sizes, rigs, and cultures. Many have stable crews, but many others take on new sailors frequently.
Most captains work on a ship until they are senior enough to run for the position.
Wet residency required. Must have certified brain-train covering standard genome and all ET warp patents. Previous wetworlds experience preferred. Five million per year will be hatched by 3010. Work will be done on wet planets.