Portsmouth Naval Shipyard
Special Steel Module Enclosure System
Naval Facilities Engineering Command
This project allowed for uninterrupted dry dock work in preparation for submarine maintenance
Kittery, ME - Submarine Maintenance Enclosures
Summit Metal Fabricators fabricated new structural steel enclosures that house Virginia class submarines during major maintenance availabilities. The enclosures are modular units that fit together seamlessly, but are built to 1/16th inch tolerance across their 60 foot length, allowing the connections that bolt the units together to line up for quick assembly and disassembly. From the dry dock floor the enclosures stack on top of each other. When fully erected they reach almost 6 stories high and weigh more than 300 tons.