I've been wondering if any one of those ample water ejection points functions as (auxillary/generator) wet engine exhaust. Looking back at the photos of 101, I've found a potential candidate, on the same longitudinal position port and starboard, just forward of the bridge:
Another unit recently photographed at a shipyard displayed a similar looking blemish at the same spot:
What are your thoughts? Any other possible candidate from among those water ejection points? Or do you think all engines use dry stack exhausts instead?