Submersibles Through Time
Clelia (1976)
This "yellow submarine" has a lot of sensitive equipment on board,
but she's more durable than she looks. Clelia is designed to
withstand possible tumbling and turning in waves of up to six feet,
even with a full crew onboard, yet can be balanced underwater to
provide researchers with an exceptionally stable platform from which
to observe. Equipped with sophisticated cameras and 500-watt metal
halide lights, Clelia assisted scientists trying to determine
why the 729-foot iron-ore carrier, the Edmund-Fitzgerald,
sank to the bottom of Lake Superior in 1975.