
USS Apogon
Bikini Atoll · Marshall Islands
The USS Apogon is a Tench-class submarine sunk during Operation Crossroads, now resting upright on the lagoon floor at 50 meters — one of only a handful of diveable submarines in the world. She sits intact with her conning tower rising to 38 meters, her torpedo tubes still loaded and open, and her interior accessible to technical divers through hatches that remain open after 80 years on the bottom. The compressed scale of a submarine makes every centimeter alive with encrusting coral, sponge, and the surreal juxtaposition of wartime hardware draped in tropical reef.
Conditions
Depth
38 to 52 m
Advanced depths
Current
Usually gentle
Can pick up on the edge
Visibility
20 to 35 m
Clearest in the calm season
Water
27 to 30°C
3mm wetsuit
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Gear