The fast G3 required three groups of boiler rooms and three groups of machinery spaces, while the slower N3 used two of each. That difference followed from their distinct power requirements. Both layouts still divided their machinery into separate groups so damage to one section would not necessarily disable the entire plant. The brief comparison shows how speed, internal volume, and damage tolerance shaped these closely related designs.
Notable Point · 1:00:09-1:00:38
How G3 and N3 divided their machinery spaces
The G3's higher speed demanded an extra machinery group, while both designs used subdivision to limit the effect of damage.