Here's Why Sailing Took So Damn Long in Legend of Zelda: Wind Waker: "There's a reason sailing the sea in the GameCube version of The Legend of Zelda: The Wind Waker was so slow and tedious. If the boat moved any faster, you'd sail off the edge of the ocean. Flat-Earthers smell a conspiracy!
No, really, the GameCube didn't have the power necessary to render the entirety of Wind Waker's ocean all at once; it could do so only in chunks, and had to keep Link's skiff from sailing past what was in memory. As director Eiji Aonuma explains, that's not a problem with the Wii U's upgraded processing, which can load the entire ocean at once. Rather than subject players to sailing at the same snail's pace of the GameCube version, the Wind Waker HD remake will allow for faster travel."