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LAKE BOAT
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Length Overall
...65 feet
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Breath of Beam
.11 feet
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Displacement Afloat
..115 tons
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Surface Buoyancy
...55 tons
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Engine Horsepower: 250 applied directly to shaft
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Battery Capacity: 75 horsepower for 4 hours
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Twin Screw
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Hull sufficient strength to submerge 150 feet
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Armament: 3 Whitehead torpedo firing tubes
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Means of submerging: Admitting water ballast, use of hydroplanes & hauling by anchor weights
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Means of surfacing by: Discharging water ballast by compressed air, power or hand pumps; hydroplanes when underway; lowering anchor weights; & releasing emergency drop keel.
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Fuel carrying capacity: 1400 gallons
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Estimated surface speed: 10 to 11 knots
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Estimated submerged speed: 7 knots
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Means of traveling on the bottom
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Submerges on level keel
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Means to enable divers to leave and enter vessel while submerged
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Automatic & positive maintenance of trim
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Means to measure distance traveled when submerged
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Invisibility in a semi-submerged condition
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Capability of steering long & correct courses
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Automatically controlling depth of submergence
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Means of cutting cables, mining & countermining
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A water tight super-structure affording deck space & sufficient buoyancy to make her seaworthy & also afford space for storage of fuel, air, tanks, etc.
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Automatic drop keel & other automatic features to prevent submerging below a safe depth.
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Gasoline fuel carried in super-structure where escaping gas or leakage would not injure crew
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Ample officers and crews quarters with cooking and sleeping facilities.
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Provision for escape of crew in case of partial disablement of vessel while submerged.
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