The Must-Have Toy for Billionaire Superyacht Owners: $5.5 Million Personal Submarine Can Dive More than a Mile Beneath the Sea

No superyacht is complete without a mini-submarine that costs a small fortune.
The latest must-have for billionaire yacht owners – the Triton 6600/2 – allows them to explore shipwrecks or other spots at new depths thanks to a revolutionary new passenger compartment that remains at surface pressure even while diving more than a mile beneath the sea.

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