More (and I hope better) sub photos

Thanks for the input. I never thought about the fine tip marker to fill in the vents and discharge vents under the hull. A sharpie fine tip would work great. I.ve used one of those to do the tires on small scale armor kits. Don't know why I didn't think of that at the time. As for the rust, its so subjective. I've seen running rust on a lot of ships with others only showing some overboard discharge pipes with heavy rust and other pipes with lighter rust. Thanks for all the input.

I'd be careful about rusting too much  more though, it should be inconsistant. Some modelers tend to oveweather.

Otherwise it looks good; the only thing I would suggest is to try and fill in the openings under the waterline with black so they look more like openings. Perhaps a fine-tipped pen  if you don't want to try paint.

I think that it looks good. the only thing i would suggest is to have the lines of rust that are coming out of the vents on every vent instead of a random pattern. just my 2 cents though.