After the Interceptor was burned and Jack Sparrow and his crew are on the Black Pearl, Will suddenly appears on the side of the ship only a few seconds after he was on the Interceptor. How did he get there that quick? Both ships were pretty far apart. Also, when he appeared on the ship, he was on the opposite side of where the Interceptor was destroyed. You can see it when they show Barbossa talking, but you have to look quickly or you'll miss it because it is in the background.