The best I have on the subject. Interesting to read Patrick O'Brian's books with that at hand. O'Brian did a massive amount of research on the navy of the time, and most of the tales are of apparently happy ships' companies, although pressed men do feature. They tend to be regarded as 'landsmen', or grass-combers, and not really worth their weight unless pressed from the merchant service. Corruption, however, was rife, and the quality of rations was highly variable as a result. The quality of the ships also suffered; in 'Post Captain', the ship Polychrest is found to have been built using 'robber-bolts' - copper, expensive, and the weight of one would pay a shipwright's wages for a day. "...but if you are a damned villain, you cut off the middle, drive each end home and pocket the money for the length of the copper in between". Not good when they hold the hull to the ship's frame.
There's a few books of this genre about but I think this is the one I've read and reccommend it.