If you think you know what it really is, or – even better – you have a hilariously silly concept of what it might be (but definitely isn’t), drop us a line and get your suggestion printed in the magazine next month.
Why not astound us with your superior knowledge of the most bizarre-looking objects in the universe by identifying the following thingy…
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Our interactive timeline shows you how the final moments played out for this huge "unsinkable" ship.