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We wanted to immerse visitors in the experience of Shackleton’s
famous lifeboat journey to show them what an amazing feat it was
to travel in a straight line over 800 miles of ocean in 60-foot-high
seas, using only rudimentary navigation instruments. We created
a realistic, high-resolution animated simulation of rolling seas,
and projected it on 12-foot screens around the boat to create an
immersive effect. By animating this instead of using real footage,
we were able to simulate the ocean conditions and sun position on
the Weddell Sea in 1915. This was crucial for the interactive portion
described below. The ocean simulation was projected onto three 12-foot,
curved screens surrounding the boat. The result is dramatic, but
cannot come close to the icy, 60-foot sea conditions that Shackleton
and his crew actually faced.
The U.S. Merchant Marine Academy provided some World War II-era
sextants that nearly matched the one used by Shackleton, and we
outfitted them with sensors and microcontrollers. Visitors are able
to take a sighting using the real sextants, while an adjacent LCD
screen calculates their sighting and compares the result with Shackleton's
actual path. The sextant is the only means of interaction; by following
the on-screen instructions and operating the sextant, the visitor
learns celestial navigation through doing it. In the ocean simulation,
the sun remains roughly in the same spot to make it easier to take
a sighting. But it is still difficult to take a perfect sighting,
and this was intentional; over ten days, Shackleton saw the sun
only two times well enough to take good sightings, and these two
sightings kept them on course for 800 miles.
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