what effect does passing the island have on the crew and on Whitney

Whitney finds the stories of the island to be mysterious. Sailors dread it.

"OFF THERE to the right--somewhere--is a large island," said Whitney." It's rather a mystery--"

"What island is it?" Rainsford asked.

"The old charts call it `Ship-Trap Island,"' Whitney replied." A suggestive name, isn't it? Sailors have a curious dread of the place. I don't know why. Some superstition--"