Comparison

Yamato (1941) vs Iowa class

The classic Second World War battleship match-up, even though the two never met. Surprisingly, the American ship is the longer one: the Iowa class measures 270.4 metres against Yamato's 263. But the Japanese battleship was far heavier, about 72,800 tonnes against 57,500, because it traded for more armour and bigger guns, while the narrower Iowa prioritised speed.

Length to scale

0 ft164 ft328 ft492 ft656 ft820 ft
Generic silhouettes by ship type, scaled to length; they do not reproduce each class's exact profile.

Iowa class is 1 times longer than Yamato (1941) · Yamato (1941) displaces about 1.3 times as much as Iowa class

Displacement balance

72,800 t57,500 t
The tilt is symbolic (logarithmic and capped) so it stays readable even between very different ships.

Yamato (1941)

263 m · 863 ft · 72,800 t

Japanese Second World War battleship; full-load displacement.

Iowa class

270.4 m · 887 ft · 57,500 t

US battleships, in intermittent service until 1992.

* Open-source estimate. Full-load displacement in approximate metric tonnes (submerged for submarines).

Figures used and how reliable they are

  • Yamato (1941): 863 ft, 72,800 t. Japanese Second World War battleship; full-load displacement.
  • Iowa class: 887 ft, 57,500 t. US battleships, in intermittent service until 1992.

Related comparisons

Compare any other pair in the warship size comparison, with its full method. More context: Weapons · Modern warfare · All tools

Sources / References

  • U.S. Navy Fact Files for carriers, destroyers and submarines.
  • Royal Navy, French Navy and Spanish Navy public ship pages.
  • IISS, The Military Balance (annual editions).
  • Jane's Fighting Ships and Conway's All the World's Fighting Ships (historical ships).