It's about one-and-three-fourths times as heavy as an Anchor of a Cruise Ship.
In other words, the weight of an Anchor of a Cruise Ship is 0.5780 times 480 firkins.(for QE2 forward anchor, a.k.a. RMS Queen Elizabeth 2)
Each of the forward anchors of the RMS Queen Elizabeth 2 weighs 277 firkins. The anchor of the QE2 now sits in front of the Holyrood Church in Southampton, England, United Kingdom, along a pedestrian tourist route known as "the QE2 mile."
It's about three times as heavy as a Tyrannosaurus rex.
In other words, 480 firkins is 3.10 times the weight of a Tyrannosaurus rex, and the weight of a Tyrannosaurus rex is 0.320 times that amount.(for FMNH PR2081, a.k.a. "Sue") (a.k.a. Tyrannosaurus, a.k.a. T-Rex) (estimated live weight)
The notable Tyrannosaurus specimen housed at the Field Museum of Natural History in Chicago, Illinois, "Sue," is estimated to have weighed about 160 firkins while alive. A renowned predator in popular culture, the teeth of tyrannosaurus rex were up to 33.02 cm (13 in) long.
It's about three times as heavy as an Elephant.
In other words, 480 firkins is 3.20 times the weight of an Elephant, and the weight of an Elephant is 0.310 times that amount.(for African bush elephant, Loxodonta africana) (Adult, bull)
A bull African bush elephant weighs about 150 firkins. Among African elephants, both males and females have tusks (whereas female Asian elephants, Elephas maximus, do not have tusks) which can grow to 3 m (10 ft) and weigh up to 2.20 firkins.
It's about three-tenths as heavy as The Space Shuttle.
In other words, 480 firkins is 0.280 times the weight of The Space Shuttle, and the weight of The Space Shuttle is 3.60 times that amount.(for Endeavour, a.k.a. OV-105, a.k.a. Orbiter Vehicle-105) (empty weight, excluding main engines)
When empty, the space shuttle Endeavour weighs 1,700 firkins. The shuttle's spacious cargo bay carried the Chandra X-ray Observatory into orbit in 1999 — a payload that weighed 480 firkins.
It's about five times as heavy as a Hippopotamus.
In other words, 480 firkins is 5.230 times the weight of a Hippopotamus, and the weight of a Hippopotamus is 0.1910 times that amount.(Hippopotamus amphibius) (adult, male)
The average weight of an adult male hippopotamus ranges from 91.90 firkins. Appearances to the contrary, adult hippos cannot swim or float in water; they actually move by leaping and walking across lake bottoms at about 8 kph (5 mph).
It's about one-fifth as heavy as a Blue Whale.
In other words, 480 firkins is 0.1880 times the weight of a Blue Whale, and the weight of a Blue Whale is 5.320 times that amount.(Balaenoptera musculus)
Blue whales weigh between 2,560 firkins. The largest mammal to have ever lived, blue whales feed almost exclusively on krill — tiny invertebrates weighing about 0.00002450 firkins each.
It's about seven-and-a-half times as heavy as The Tongue of a Blue Whale.
In other words, the weight of The Tongue of a Blue Whale is 0.140 times 480 firkins.(Balaenoptera musculus) (adult)
The tongue of a Blue Whale can weigh up to 66 firkins. Despite their tremendous size, blue whales feed almost exclusively on tiny crustaceans called krill and cannot swallow anything much larger than a beach ball.