This 5-1/2 x 8-1/2" card provides a detailed depiction of the Thunderbolt dive site in Marathon, Florida. Each waterproof card is double sided, made of durable PVC plastic and is designed to be taken on the dive. They are also 3 hole punched to fit in standard log books.

The Thunderbolt is a thrilling dive, for those divers qualified to make it. All diveshops will pre-qualify divers with C cards and logbooks. Only Advanced divers should attempt this dive, due to its depth and often strong currents.

Sitting upright in 115 feet of water, the Thunderbolt is totally intact and recognizable as a nice wreck. It is heavily encrusted with a variety of encrusting sponges and soft corals. At the bow, her massive cable-laying wheel, now encrusted with coral and filled with schools of silversides, dominates the scene.