SortStack #301 — 2027-04-06

By weight · Order from lightest to heaviest.

1. A ruby-throated hummingbird 4 g

   It crosses the Gulf of Mexico nonstop — about 800 km — burning nearly half its body fat in a single 20-hour flight.

2. An upright piano 220 kg

   Inside is a cast-iron plate holding strings at a combined tension of roughly 18 tonnes of pull.

3. The Antonov An-225 Mriya cargo plane at maximum takeoff weight 640 t

   The heaviest aircraft ever built was destroyed in Ukraine in 2022; 'Mriya' means 'dream' in Ukrainian.

4. The RMS Titanic 52K t

   Each of her giant anchors needed a team of 20 horses to haul through the streets of Belfast to the shipyard.

5. The CN Tower in Toronto 117.9K t

   It held the title of world's tallest free-standing structure for 32 years, and its glass floor was the world's first.

6. The supertanker Seawise Giant, fully loaded 650K t

   The longest ship ever built could not transit the Suez or Panama canals — or even the English Channel — when fully laden.

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