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.
When a female cat goes into heat, it means that they are ready to have litters of kittens. If the cat mates while in heat and becomes pregnant, the pregnancy lasts 60 to 64 days on average before giving birth. If the cat mates and doesnât get pregnant, it may take up to 30 days before the cat goes back in heat again. If a female cat isnât spayed, the cycle continues in this vein until the cat has kittens.