This Stealth Attack Boat May Be Too Innovative for the Pentagon

On the northern edge of the Portsmouth Naval Shipyard in Maine, past the security checkpoint and high-tech stations for refurbishing nuclear submarines, is a derelict warehouse that once doubled as a sawmill. Building 129’s corrugated metal exterior is rusted and overgrown with bursts of ivy. Broken glass in some of the windows has been replaced with clear plastic. Inside, it takes a moment to adjust to the cavernous silence and dim orange lighting, but one immediately senses the hulking presence of the hangar’s inhabitant: a vessel called Ghost.

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