I have been keeping Backyard Chickens for 7 years. Can't tell you how much better the eggs are. Taste, color, texture. My hens eat non-GMO grains and table scraps when appropriate. Since birds universally like bread and worms, cooked spaghetti is like a "bread worm" to them...these ladies go nuts. Oddly, some like fruit while others turn their beaks up it.
They free range 2-3 days per week.
With 6 hens (no rooster) I get about 35 - 40 eggs per week so I make a lot of soufflés, quiches, cakes, ice creams...and give them and the rest of my eggs to neighbors. My current mix of shell colors are Light Brown, Dark Brown, Light Green, Light Blue and White. The eggs themselves are all the same. An amazing food source.
By the way, there's really no need to refrigerate eggs on a boat, as long as you turn them over once per day. (Flipping the whole carton counts) but most trawlers have plenty of room in the fridge.