So just found this Quest because someone mentioned the 'Loyalist Iron Warriors doing Iron Warrior things with a passion' elsewhere and I found that amusing. Definitely an interesting result from Chapter Creation, bit of a pity about the Hiatus but that's just life.
That said, regarding the high numbers of Escort Warships and Vehicles... There's actually an easy explanation for that, especially with our good relations with the Mechanicus and Administratum. Namely that the Chapter is deliberately 'over supplied' in both fields with both of the groups being permissive about allowing us to gain additional assets of those types. And the reason for this is just the fact that between constant Escort patrols of our area of duty, the grinding warfare we specialise in and all that... We're basically always at the 'normal, if a tad large' level of capacity for functional Escort warships and Vehicles.
The rest is stuff that recently got smashed up in battle and is slowly being repaired just fast enough that it'll go out and replace something else which now needs to be repaired from combat damage. With the Mechanicus and Administratum both knowing this reality and being happy with it because it A) keeps our Chapters effective combat power down, which is always a concern with Space Marines in the Imperium; B) means we're usually doing favours for the Mechanicus and Administratum to get the resources and replacements needed to repair the losses and damage and C) said damage is often inflicted doing the 'low level, extremely important but not exactly prestigious' tasks that both groups never have enough buckets to deal with using their own assets.
