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Old March 13th, 2018, 12:07 AM
marginaleye marginaleye is offline
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Question T5 Armor Layers and Planetoid Hulls

Can somebody explain how armor for starships works in the T5 design rules?

I'm trying to design a ship with a Planetoid, i. e. Hull Configuration = P, hull.

As I understand it, ships with Planetoid Hulls automatically have Hull Structure = FeN, and thus use FeN Armor Layers.

The Armor Value of an FeN Armor Layer is 20. That's actually a lot *better* than a standard Plate Armor Layer, whose Armor Value is equal to the Tech Level of the ship.

Each Armor Layer (regardless of type) after the first requires 4% of the total volume of the ship's hull.

Here's what's puzzling me: In the Classic Traveller "Book 5: High Guard" design rules, the protective value of a planetoid hull came at a rather heavy price -- the loss of 20-35% of the ship's total volume (depending on whether you wanted a regular planetoid hull, or a sturdier "buffered" one). I've looked and looked, but haven't been able to find any similar penalty in the T5 design rules.

Am I missing something? This seems broken to me. I checked the "T5 0.9 Errata Review" PDF, and didn't find anything there. I find it very hard to believe that (a) a cubic meter of natural nickel-iron planetoid offers better protection than a cubic meter of carefully designed and manufactured hull, and that (b) there's no minimum amount of space within a planetoid ship that must left "un-carved and un-tunnelled" for the sake of preserving structural integrity.
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