Theory

SDI Solo Diver Theory On-Line

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Start Learning to Dive Solo Today SDI makes it possible for you to complete all of the academic requirements for your solo diver certification on-line. You can get started right now and, when you are done, complete your open-water training dives at an SDI Dive Center close to home, or at a popular vacation destination.

Getting your solo diver certification is a three-step process: read more →

SDI Assistant Instructor Theory On-Line

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Earning the SDI Assistant Instructor rating is one of the most important steps along the way within an SDI, TDI and/or ERDI Dive Leader’s career, as it is where you will learn to successfully train new and seasoned divers alike. This course has been meticulously crafted to help further your knowledge and experience with regard to the theories and techniques involved in teaching scuba diving as a whole. In this course you will have the opportunity to delve into how and why people learn; common barriers associated with learning and ways to overcome those barriers; the SDI Teaching Philosophy and why it works; risk management and how it applies to being a dive leader; and new ways to successfully market and sell scuba. read more →

SDI Wreck Diver Theory On-Line

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SDI Wreck Diving Course

“Bill Nagle’s life changed the day a fisherman sat beside him in a ramshackle bar and told him about the mystery he had found lying at the bottom of the Atlantic Ocean..” Shadow Divers, Robert Kurson

Wreck diving is the quintessential reason for many divers to dive at all. Wrecks have a huge attraction for their historical value, as a habitat for marine life and as a three-dimensional statement illustrating the power of the sea and storms to unravel even the best laid plans. There is little more thought provoking than floating weightless in the ocean looking down on the huge ragged left by a torpedo or the intact rope work of a schooner’s bosun dead more than 150 years. Wreck diving is a fantastic adventure. read more →