The sailor in the mismatched bottoms/top has a machinist mate rating badge on his sleeve. This means he worked in the boiler room or engine room. I served in the Navy on board submarines as a nuclear propulsion plan operator. I can only imagine the hell-hole that the engineering spaces on the Nahant were.

My Sea Scout Ship turned out in better form than that bunch.

I wonder how they kept the whites white on those coal fired ships. Or on the oil fired ships as well. Considereing that even modern ships' diesels can be quite sooty.

No emission control means beyond the quality of fuel, power setting and some mainenance (for what that is worth). No emission control requirements other than "we don't want the enemy to spot our plume".

After a prominent role in the Civil War, this Monitor was re-commisioned and saw service in the Spanish-American War around the time of this photo. These Sailors were living aboard what was even then an ancient Relic. Looking beyond the miss-matched, probably hard to come by,uniforms, they seem a proud and cheerfull group of Sevicemen.

Yeah, they're definitely reservists, what a sloppy bunch!

The captain of that Civil War relic must have been a forgiving man. Those uniforms are a disgrace. One man is wearing a dress blue jumper and 13 button white pants while one of the chiefs is even wearing a striped tie! My captain would have had the whole lot on report.