I wandered around the internet trying to find the meaning behind star tats and found that a blue star tattoo symbolizes heroin use: http://www.faqfarm.com/Q/What_do_star_tattoos_mean

I even found this link too, it's a little bizzare urban legend about lick and stick tats: http://users.lycaeum.org/~sputnik/Tattoo/

Other meanings such as "to protect and guide" some kind of navy relation.