Why did Columbus have his ships wait until daylight before approaching the island?

Columbus had his ships wait until daylight before approaching the island to ensure a safer and more accurate navigation. Approaching in the dark could have led to dangerous encounters with unseen reefs or other hazards. Additionally, daylight would allow him to assess the landscape and any potential inhabitants on the island, enabling a more strategic landing. This cautious approach reflected his desire to protect his crew and ensure a successful landing.