But the length at the water line of a Nimitz class carrier is 1,040 feet... Based on the well known formula for hull speed(1.34x sqrt of the length of the waterline), that puts the max speed of them at about 43 knots... Or right about 50mph. While some designs allow for exceeding hull speed, It's fairly doubtful that a ship the size of an aircraft carrier can utilize those methods. It's possible that they don't have the engine power to make 43 knots, but I bet that they come very close to it.
Actually, most cats will have an estrus cycle (the technical name for heat) within six to eight weeks after giving birth. In rare occasions, a cat will have an estrus cycle within a week after her kittens were born.
Quick Answer. According to 2nd Chance, it takes roughly 6 to 8 hours for a mother cat to deliver an entire litter of kittens. Typically, the first kitten arrives around an hour after labor starts. There is often a period of 10 minutes to an hour between the arrival of each kitten. There are two stages of cat labor. During the first stage of labor, cats may show symptoms such as rapid breathing, nesting, trembling and nipple discharge.