Offcoming

Heterogeneous reactions involving the offcoming vapors are accelerated or retarded.

The workday began at first light and continued until evening twilight. The men first stored their hammocks, then went about sweeping and swabbing down the decks. Breakfast was timed so as to feed the ongoing watch and then the offcoming watch.

And when I was done washing all the on-going shift's dirty dishes, I had to start all over again with the off-coming shift and the rest of the crew.