Was Britannic the largest Olympicclass ship

[Ben Hamel]

Was Britannic the largest Olympic-class ship? I was searching Wikipedia, and it says that the ship was the same length as the Titanic and Olympic (882 ft and 6 in). Are they referring to it's tonnage? Or length?

 

[Jonathan Smith]

That's referring to her tonnage

 

[Dave Gittins]

Don't trust Wikipedia on Titanic and her sisters.

All three were the same length. 882' 9" overall.
Britannic was 94' wide and the others were 92' 6". (That's the extreme beam, which includes overhanging railings and the like.)

Britannic was the largest by Gross Registered Tonnage, which is a measure of volume.