Thanks dudes! It took around 3 1/2 hours, so not too long really. But it did fucking suck. Holy shit the chest is a shitty place to get tattooed. We used a numbing spray or whatever, so for the shading my chest was pretty much sedated which was nice/weird. Without it it would have been a 2 session thing for me for sure, or just taken a hella lot longer if I had to do it in one sitting.
Those 13 year old sailor kids who got their chests tattooed were some tough ass kids..