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Six-Gill blade dynamics for unparalleled propulsion
Exposure protection appropriate for local diving condition
High performance polyethylene mixed with steel and spandex fibers
Natural comfort
The high grade grooved mahogany
SDI Underwater Navigation GI BIll Six-Gill blade dynamics for unparalleledUnderwater Navigation Course Information: With Underwater Navigation you will learn how to use a compass to navigate your way both above and below the surface. Throughout the course you will learn how to use your surroundings to help you navigate and predict your route. The techniques learned will provide the diver a greater understanding on using navigation to find an exit point at the end of a dive without the need for an uncomfortable surface swim.