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What is the PADI TEC 45 course and how does it differ from TEC 40 and TEC 50? TEC 45 is intented to provide TEC 40 certified divers with additional training to perform deeper technical dives. Unlike TEC 40, TEC 45 is a pure technical diving course intended for divers who are interested in doing more advanced dives requiring technical diving skills. In TEC 45 divers learn more advanced technical diving skills, dive deeper and longer, and learn how to decompress with higher levels of oxygen than with TEC 40. On completion of TEC 45, divers are certified to dive to 145 feet or 45 meters with unlimited decompression time, and 100% oxygen.

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