Final answer:
Phoenician sailors established a reputation as formidable mariners by developing extensive trade networks and advanced seafaring technology. The presence of pirates in the Mediterranean might have also served as a deterrent to others contemplating maritime activities.
Step-by-step explanation:
Phoenician sailors did not use classical discouragement tactics to prevent others from sailing in the Atlantic. Instead, they built a reputation as skilled mariners and explorers, forming extensive trade networks throughout the Mediterranean, and, according to some accounts, even circumnavigating Africa. They traveled vast distances, established colonies, and developed advanced seafaring technology like the 'bireme'. Rather than discouraging, this would have likely inspired awe and respect, making other civilizations cautious to compete directly with the established Phoenician prowess at sea.
Furthermore, the presence of pirates in the Mediterranean posed a significant risk to maritime trade and exploration. With pirates often launching attacks from hidden harbors and being involved in widespread slavery and the market in Delos, this dangerous environment itself may have acted as a deterrence to others considering long-distance maritime endeavors, making the Phoenicians' successful navigation and trade networks all the more impressive.