Big Shell

Huge marine decontamination facility established approximately 30 kilometers offshore from Manhattan. Composed of two units, Shell 1 and Shell 2, with each unit made up of a central building surrounded by six legs. Resembles a tortoise shell when viewed from above.

The sinking of a tanker off Manhattan in 2007 caused a large quantity of crude oil to be discharged into the sea. The government immediately responded with the construction of an oil fence. Using chlorine derivatives, they sterilized the entire zone of polluted sea and constructed a huge marine decontamination facility. Biological reactors managed in nodes are installed inside Big Shell, and it is held up as a symbol of environmental protection.

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Disguised as a decontamination facility, Big Shell was actually a facility for constructing the Navy's massive Metal Gear, "Arsenal Gear". The environmental protection episode was a cover story to conceal this fact. A tanker was intentionally sunk to pollute the ocean with crude oil. The decontamination effort that followed was staged in order to complete tests on Arsenal Gear and the GW neuro-AI.

30 Billion Dollars
AT Security (MGS4)
Arsenal Gear
Biological Reactor
Biometrics
Black Suitcase
Bomb Sensor
Emma Emmerich
Emma's Parrot
FOXALIVE (MGS4)
George Sears
Hal Emmerich
High-Frequency Blade
ID Tag System
Iroquois Pliskin
JD (John Doe) (MGS4)
James Johnson
Johnny
Little John (MGS4)
Mei Ling
Mr. X
Nanomachine
New Cyborg Ninja
Newly Reinstated FOXHOUND
Node
Ocelot
Oil Fence
Old Snake (MGS4)
Olga Gurlukovich
PAN
Pacemaker
Peter Stillman
Raiden
Rail Gun
Richard Ames
Rosemary
SEAL Team 10
SEALs
Skull Suit
Sneaking Suit
Solidus Snake
Sons of Liberty
Sunny's Mother (MGS4)
The Man in the Cardboard Box
Triple Crosser
VR Training
Vamp
Wharf Roach
Women's Bathroom