While in a discussion in #Gaming, TheBrititshLemon pointed out that the size of the Dawn in Halo 4 is much larger than it is in Halo 3.
Doing some research, I determined he was correct. I likely reason is that the Dawn was in inflated in size to make the opening level much more enjoyable in size. That would be true, but the problem begins when we are given the size of the Hyperion Missile.
Given how helpful Stephen Loftus was in explaining how size of the objects in Halo 4 were determined, I think it's safe to assume that they determined the Hyperion Missile size relative to the in game model of the Dawn.
[url=http://www.halopedia.org/images/5/53/FUD_H3-Hyperion_H4-scaled2.jpg]This picture[/url] shows the problem with this.
Before I go on, I want to give the most recent canon sources for the sizes of the objects I'm going through.
[quote]Length
202.6ft (61.7M)
Width
51.9ft (15.8M)
Height
56.1ft (17.1M)
[i]-Hyperion Missile, Page 74, Halo 4 Essential Visual Guide[/i][/quote]
[quote]Length
1,607ft (490M)
Beam
510ft (156M)
Height
457ft (139M)
[i]-UNSC Forward Unto Dawn, Page 186, Halo 4 Essential Visual Guide[/i][/quote]
Roughly counting how many Hyperion Missiles fit into the shadow of the Halo 4 Dawn, I estimated 12 do.
Math:
12 X 61.7 = 740.4M
That means that the aft section of the Dawn in Halo 4 is 740.4M in length which is incredibly skewed to the official 490M of an intact Charon Frigate.
We can also see the Halo 3 Aft section for comparison. The height of the Halo 3 version seems accurate as two Hyperion Missiles stack up leaving a little extra room for a fraction of another missile.
Math:
2 X 61.7 = 123.4M
Which compared to the official height of a Charon being 139M makes the Halo 3 Dawn the most accurate Charon we have size-wise.
The problem this causes though, is that we can't pretend the dawn is up-scaled for gameplay reasons. Why? The Hyperion Missile is way to large for the actual Dawn to house three of them.
Math:
740.4 / 61.7 = 12
490 / 2 = 245
~245 / 12 = 20.4
Proportionally, if the layout of the Dawn's Hyperion launch bay was to stay correct, the Hyperion Missile would need to be 20.4M tall.
So I see a few options to rectify this problem.
1. The Dawn is up-scaled in size to be correct based on its in-game Halo 4 size
2. The Hyperion Missile is reduced to 20.4M in length
3. The Hyperion Missile size is slightly reduced and the Launch Bay is redesigned to fit the missiles
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Personal Notes:
Given that the Lore Community widely accepts that Frigates are star ships built around MAC Guns, it is possible that the Hyperion Missiles are actually that big in comparison to the canon Frigate, meaning that Frigates are literally ships built around weapons, mainly the Hyperion Missiles and Mac Gun.
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I think we should just put it down to it being upscaled for gameplay reasons.