1851 Great Exhibition: Official Catalogue: Class VIII.: Alfred Augustus Hely
From Graces Guide
13. HELY, ALFRED AUGUSTUS, 16 Manchester Buildings, Westminster — Inventor.
The catamaran, or life-float, composed of waterproof canvas cylindrical cases, filled with bedding, clothing, provisions, stores, or any matter of less specific gravity than water.
Salvage boat, wholly composed of metallic tubes, forming atmospheric and hydraulic chambers, with loaded keel and self-shifting wheels.
Life-girdle, composed of spherical floats strung upon an endless elastic band.
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