Why did Athenians have to be careful when they went to sea?

Athenians had to be careful when they went to sea due to the threat of piracy, which was common in the Mediterranean during ancient times. Moreover, unpredictable weather conditions and rough seas could pose significant dangers to their ships and crews. Additionally, naval battles could arise from conflicts with rival city-states, meaning that Athenians had to navigate both environmental and human threats while at sea. This caution was essential for ensuring their safety and the success of their maritime trade and military endeavors.