I've read the Aubrey-Maturin novels and other naval books of the period and it's remarkable that the sailors generally preferred their salt beef and pork and peas to fish, unless someone caught something really tasty. Or the provisions were running out.
Of course, the diet of the average lower class Englishmen in the 18th and early 19th Centuies was pretty wretched. A number of sailors joined the Navy because the food was better than that at home.