Staff Chiefs
 

What did staff chiefs actually do, the ones I sailed with as far as I knew did precisely nothing, they never went near the engine room and I never saw one in a boiler suit and the only "work" I ever saw him do was carry his brief case to a lodge meeting on board. Fast forward to 2018 on a Cunard cruise and I saw a staff chief in a boiler suit (complete with 4 ring epauletts) handling a fire hose on a fire drill. So perhaps things have changed.

In Kuwait Shipping the Chief liaised with the Master, the Staff Chief poured for them and the Sec ran the job.
And proper order too.